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“Agent Sonya” – the story of the Soviet Union’s most important female spy

 

Ursula Muerton
a.k.a. “Agent Sonya”

Reviewed by BERNIE BELLAN I happened to have the radio on one Saturday afternoon – more as background noise than anything, when Elanor Wachtel’s CBC program on books, “Writers & Company”, came on. Normally I don’t pay attention to Wachtel’s program because it requires paying complete attention to the radio – something which I rarely do unless I’m out for a walk. However, as soon as Wachtel began to introduce her guest, a writer by the name of Ben Macintyre, the subject matter immediately grabbed my interest. Here is how she introduced Macintyre:

“Mrs. Len Beurton of Great Rollright, a tiny village in the Cotswolds, was an apparently ordinary housewife and mother of three, famous for her home-baked scones.
“In reality, she was Agent Sonya, a top Soviet operative, transmitting plans for the atomic bomb from an outhouse in her Oxfordshire garden. Her real name was Ursula Kuczynski and her intelligence work took her from her native Germany to Shanghai, Japanese-occupied Manchuria, Poland, Switzerland and England.
“Ursula’s eventful life is the subject of Ben Macintyre’s compelling new book. The British journalist is known for his bestselling accounts of international espionage — stories of intrigue, romance, betrayal, war, loyalty and conflicted morality. Over the past 30 years, he’s produced a dozen engaging, authoritative studies of high-profile figures ranging from Britain’s famed double agent Kim Philby to Moscow’s Oleg Gordievsky, who spied for Britain. He is also currently a columnist and associate editor for the Times U.K.”

As I listened with rapt interest to Macintyre describing the life of “Agent Sonya” I was determined to read his book – and I did, in less than a week.
Now, while I have somewhat of an interest in spy thrillers, including several I’ve read by Daniel Silva who features an Israeli spymaster by the name of Gabriel Allon (after being turned on to Silva two years ago during one of the meetings of the book club this paper co-sponsors with the Rady JCC, when our brilliant convener Sharon Freed who, unfortunately died much too young, included Silva’s “Rembrandt Affair” on the reading list that year), I much prefer reading non-fiction accounts of espionage, especially when they’re about the Mossad.
So, when Macintyre began to relate the story of an incredibly successful female spy for the Russians whose story has gone relatively unreported – and then happened to remark that she was Jewish to boot – well, he had me hooked.
Sonya Buerton (born Ursula Kuczynski, a.k.a. Sonya Hambuerger) was one of those rare individuals who not only succeeded brilliantly at her craft, she managed to live out her days dying a natural death in Moscow in the 1970s. That she survived the Stalin era in itself is rather extraordinary as Stalin’s paranoia led him to purge the ranks of his spy network on an ongoing basis – including a good many of the agents who had nurtured Sonya’s own career.

The fact that Ursula Kuczynski was born into an upper class Jewish family in Berlin in 1908 is something that I found most intriguing. The often pivotal roles that many Jews played in the spread of communist ideology in the first few decades of the 20th century is something that is widely known, but reading about someone who came from quite a prosperous family and who chose to commit herself to the pursuit of an ideology that was essentially antithetical to her own upbringing – and remained absolutely committed to that vision throughout her life, is not easy to understand.

Having experienced the chaos of the Weimar Republic in Germany one might well comprehend how someone as intelligent and well-educated as Ursula would have been drawn to communism in her late teens – at a time when Germany was being polarized into two camps – fascist and communist. It doesn’t seem, however, that the Kuczynski family’s being Jewish had much to do with what eventually became a thoroughly unquestioning loyalty to Soviet Communist ideology on the part of everyone of its members, including Ursula’s father, brother, and four sisters. That Ursula remained committed to communism throughout her life, however, despite all the betrayals of its goals perpetrated by Stalin and his disciples, is much more difficult to understand.

Macintryre doesn’t spend much time exploring the lure that communism held for Jews, but what I found particularly unsettling is how each member of this family was able to rationalize Stalin’s atrocities. Further, when the Russian Foreign Minister Molotov and his German counterpart Von Ribbentrop signed their non-aggression pact in 1939, the fact that so many communist sympathizers were able to twist themselves into pretzels defending a total betrayal of everything they had been espousing when it came to fighting fascism is really an indication how easily communist sympathizers could justify a 180 degree reversal in thinking without much compunction.
Ursula’s life, as told by Macintyre, was thoroughly documented throughout her lifetime, by her and by others, who kept detailed accounts all through the 1920s, 30s, and 40s. It turned out that Ursula was actually an excellent writer and her journals were not only detailed and very readable, when she eventually managed to escape to the Soviet Union shortly after the end of World War II, she managed to turn her fine writing talent into a craft as a writer of spy thrillers under the pen name “Ruth Werner”. (Her books, written in Russian and translated into several languages, actually sold quite well. As Macintyre notes, Ursula was merely one more former spy who was able to use their own experiences in order to turn out masterful spy novels. Included in that group also were Graham Greene and John Le Carré.)

Yet, as much as Ursula’s being Jewish does not play a central role in “Agent Sonya”, consider this: Her first marriage was also to a fellow Jew, an architect by the name of Rudolf Hamburger. Hamburger himself had no interest in Ursula’s communist leanings early on, and he was rather successful as an architect. But, in one of the most surprising twists in the story, once he and Ursula moved to China, where he helped to design some of the famous buildings along Shanghai’s Bund, and Ursula was first approached with the idea of becoming a Russian spy, even all the while that their marriage was falling apart, Hamburger was gradually transforming into a communist himself.
Further, even after Ursula left him – and the child that she bore while married to him, Hamburger became convinced that he too had to become a Russian spy! All the while he still loved Ursula too, even after he learned that she had become pregnant by another man and then again, by yet a third man.
It was in China that Ursula became a full-fledged Russian spy – with a change of name to Sonya. Several characters played key roles in leading to Ursula’s gradual induction into the world of Soviet espionage, including an America writer by the name of Agnes Smedley – a larger than life character who eventually became a leading apologist for Mao Tse Tung’s totalitarian rule.

The cast of characters in “Agent Sonya” is riveting. What Macintryre does so brilliantly is describe how ordinary individuals who would not stand out in any exceptional way possess the key ingredients that it takes to be a successful spy, including, among others: resourcefulness, an exceptional ability to lie one’s way through any situation, and what Ursula Kuczynski apparently possessed in spades: an ability to thoroughly compartmentalize one’s life.
Here we have a woman who, on the one hand, is a capable housewife – and mother – to three different children, by three different men no less! (and the children actually move with her from time to time as she’s relocated by her Soviet spymasters to different locations around the world, including Manchuria, Poland, Switzerland, and finally Britain), at the same time as she is able to insinuate herself into the upper echelons of enemy administrations wherever she is based.
In one passage that I found particularly compelling, “Sonya” describes how difficult it often was for her to sleep – and dream, without finding all the contradictory aspects of her various secret lives running up against one another. All the while she did this without resorting to alcohol or drugs – which is what almost inevitably become the crutches upon which spies lean. That she was also able to move from relationship to relationship with different men – twice at the order of her Soviet spymasters, and actually have honestly warm relationships with them to the point where she did love them yet, when ordered to leave those men, embark on a new assignment, is testament to her total acceptance of her role.

Here’s another interesting note about Sonya: As much as the intelligence she provided about various enemies, including: Chinese Republicans in Shanghai, Japanese occupiers in Manchuria, and German Nazis in Switzerland, was of great value to Russian intelligence, it was when she was able to move to England in 1941 that her greatest espionage coup was to come.
Living in a nondescript farmhouse in an out of the way village not too far from Oxfordshire – and by this time her name was now Sonya Buerton (the last man to whom she was married was also a spy by the name of Len Buerton), she was put in touch with a German-born scientist by the name of Klaus Fuchs. Fuchs was a brilliant physicist who was working on Britain’s own plan to develop an atomic bomb – separate and apart from what the Americans were doing at the same time. He was, however, a devout communist and determined to share whatever secrets he could with the Russians.
Sonya became his intermediary through which he was able to pass along reams of information to the Russians that proved to be of incalculable value in helping the Russians to leap frog what would undoubtedly have taken them years more to acquire on their own. Later, he moved to the U.S. to work on the fabled Manhattan Project. It was while he was in the U.S. that he had a change of heart, however, and turned himself in as a spy to the Americans. At the same time, though, he never betrayed Sonya.

Macintyre asks repeatedly how it was that Sonya was never caught by British intelligence, despite all the evidence that had been pointing for quite some time in her direction. Although he doesn’t arrive at a definitive conclusion, he suggests that more than anything, it was the total incompetence of the head of MI5 (Britain’s internal intelligence service), someone by the name of Roger Hollis, that led to Sonya’s being able to evade arrest.
At the time there was only one woman in a senior position in MI5, whose name was Millicent Bagot. Bagot was a dedicated – and thoroughly competent spychaser, far better qualified in her position than Hollis, who never believed that a woman could be a successful spy. Bagot was actually convinced early on that Sonya was a Russian agent and she bitterly fought to keep her from being allowed to enter Britain in 1941.

There is more than a little irony in the fact that one of Russia’s most successful spies of all time was a woman who was able to carry on her espionage precisely because she was a woman, while the one individual who would undoubtedly have been able to expose Sonya was also a woman but whose abilities were constantly underestimated, just as Sonya’s were, surrounded as she was by thick headed men.
“Agent Sonya” is a thoroughly compelling read. While the fact that Sonya was Jewish may be regarded as largely irrelevant to what became the story of her life since it never seemed to play any role in what ultimately ensued, I’m sure that for Jewish readers of this book the awareness that the person they are reading about was Jewish will lead to one’s wondering whether her being Jewish played a much larger role in her story than perhaps even Sonya herself was aware.
Here’s what Macintrye himself has to say in summing up Ursula’s life toward the end of his book: “If you had visited the quaint English village of Great Rollright in 1945, you might have spotted a thin, dark-haired and unusually elegant woman emerging from a stone farmhouse called The Firs, and climbing on to her bicycle. She had three children and a husband, Len, who worked in the nearby aluminium factory. She was friendly but reserved, and spoke English with a faint accent. She baked excellent cakes. Her neighbours in the Cotswolds knew little about her.
“They did not know that the woman they called ‘Mrs Burton’ was really Colonel Ursula Kuczynski of the Red Army, a dedicated communist, a decorated Soviet military intelligence officer and a highly-trained spy who had conducted espionage operations in China, Poland and Switzerland, before coming to Britain on Moscow’s orders. They did not know that her three children each had a different father, nor that her husband was also a secret agent. They were unaware that she was a German Jew, a fanatical opponent of Nazism who had spied against the fascists during the Second World War and was now spying on Britain and America in the new Cold War. They did not know that in the outdoor privy behind The Firs, Mrs Burton had constructed a powerful radio transmitter tuned to Soviet intelligence headquarters in Moscow. The villagers of Great Rollright did not know that in her last mission of the war, Mrs Burton had infiltrated communist spies into a top-secret American operation parachuting anti-Nazi agents into the dying Third Reich. These “Good Germans” were supposedly spying for America; in reality, they were working for Colonel Kuczynski of Great Rollright.
“But Mrs Burton’s most important undercover job was one that would shape the future of the world: she was helping the Soviet Union to build the atom bomb.
“For years, Ursula had run a network of communist spies deep inside Britain’s atomic weapons research programme, passing on information to Moscow that would eventually enable Soviet scientists to assemble their own nuclear device. She was fully engaged in village life; her scones were the envy of Great Rollright. But in her parallel, hidden life she was responsible, in part, for maintaining the balance of power between East and West and (she believed) preventing nuclear war by stealing the science of atomic weaponry from one side to give to the other. When she hopped on to her bike with her ration book and carrier bags, Mrs Burton (or, more precisely, Beurton) was going shopping for lethal secrets.
“Ursula Kuczynski was a mother, housewife, novelist, expert radio technician, spymaster, courier, saboteur, bomb-maker, Cold Warrior and secret agent, all at the same time.”

“Agent Sonya” – the story of the Soviet Union’s most important female spy
“Agent Sonya”
By Ben Macintyre
354 pages
Published Sept., 2020
Available on Amazon

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Winnipeg’s Jewish Community and the Question of Online Casino Bonuses: What Manitoba Players Should Know

Photo by m on Unsplash

A reader wrote in last month asking a simple question: is it legal to play online casino games in Manitoba, and if so, what’s actually a fair deal? It’s the kind of practical, money-conscious question this paper’s readers tend to ask before spending anything, the same instinct that shapes how the community shops, budgets for the High Holidays, or decides which shul renovation appeal to support. Manitoba’s online gambling landscape has changed enough in the last few years that the old assumptions no longer hold, and it’s worth walking through what’s actually there now.



Manitoba’s Online Casino Landscape in 2026



Manitoba doesn’t have an open, competitive online casino market the way Ontario does. Since April 2022, Ontario has allowed private operators to apply for licences and compete for players directly. Manitoba still runs a single-operator model: Manitoba Liquor & Lotteries (MLL), the Crown corporation that also runs the province’s Liquor Marts and lottery products, operates the one legal online casino for Manitoba residents, PlayNow.com. That’s the whole regulated market in this province. Outside that single option, Manitobans who search for online casinos will find dozens of sites willing to take their money and their information, a pattern this paper’s own Local/Canadian News coverage has tracked as provinces across the country adjust their approach to regulated gambling. Some are licensed elsewhere, Malta, Curaçao, the UK, and operate in a legal grey zone for Canadian players; enforcement against them has been inconsistent for years. None of them answers to Manitoba’s regulator, and none of them contributes a dollar back to this province.



How Casino Welcome Bonuses Are Structured and Regulated



A welcome bonus is usually presented as free money: deposit $50, get $50 in bonus funds, sometimes with free spins attached. What matters is the fine print attached to it. Wagering requirements determine how many times you must play through the bonus amount before you can withdraw any winnings; a 30x requirement on a $50 bonus means $1,500 in total wagering before that money is really yours. Game weighting matters too: slots typically count 100% toward that requirement, table games often count 10% or less, which punishes anyone who prefers blackjack over slot spins. Time limits, usually 7 to 30 days, and maximum bet sizes while a bonus is active, round out the list of terms most players skip past.

On PlayNow.com, these terms are published in plain language and reviewed by a provincial Crown corporation with community accountability baked into its mandate, the same mandate that funds Manitoba’s healthcare and education budgets. That’s a meaningfully different relationship than the one an offshore site has with a Manitoba customer.



The Difference Between Licensed Canadian Operators and Offshore Alternatives



This is where the practical stakes are highest. A licensed Canadian platform is subject to specific consumer protections: verified game fairness, dispute resolution through a regulator you can actually reach, and deposit-limit tools that work. An offshore operator answers to a foreign licensing body, if it answers to anyone at all. Winnipeggers who’ve had a withdrawal disputed by an offshore casino know how limited the recourse actually is; there’s no Manitoba office to call and no local regulator with jurisdiction.

Across the country, players comparing regulated options increasingly start by checking a best casino bonus Canada comparison rather than relying on whichever ad appears first. It’s a reasonable way to sort a legitimate Canadian-licensed platform from an offshore look-alike before depositing anything.



Responsible Gambling Resources Available in Manitoba



This part matters more than the bonus terms. MLL runs Informed Gambling, its dedicated responsible-gambling program, which includes deposit and time-limit tools, self-exclusion options, and educational material aimed at helping players recognize when a habit has become a problem before it becomes a crisis. Manitobans concerned about their own gambling, or a family member’s, can call the Manitoba Addictions Helpline, toll-free at 1-855-662-6605, for confidential support. Shared Health, formerly the Addictions Foundation of Manitoba, also provides professional counselling free of charge to anyone who needs it, regardless of ability to pay.

For a community that has always taken care of its own, through the Chesed Shel Emes, through synagogue-run support networks, through the kind of quiet checking-in that happens after a funeral or a hard year, these resources are worth knowing before they’re needed, not after. Chasing a Canadian online casino bonus isn’t worth it if the wagering requirements are already causing strain. That’s a conversation worth having, honestly, inside families and inside the community, before it becomes a private one.



Where to Compare Current Casino Bonus Offers Across Licensed Platforms



None of this is an argument against playing. It’s an argument for playing somewhere accountable, with terms you understand, and for a modest amount you’ve already decided you can afford to lose. Manitoba’s single-operator model makes that comparison simpler than Ontario’s crowded market, but it also means doing the homework on wagering requirements and licensing status matters just as much, if not more, when there’s only one legal option and a long list of unregulated ones competing for the same click. Ask the question before depositing, not after; that’s the same advice this community gives about most things worth being careful with.

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Embracing your femininity in Tishrei

By ELENA KNIGHT Rosh Chodesh Sameach! This month, Tishrei, is a time of beginnings; we observe Rosh Hashanah, Yom Kippur, Sukkot, Shemini Atzeret, and Simchat Torah, we celebrate humanity’s creation, and we celebrate the seventh month since the Exodus from Egypt with shofar and festivities.

Though all Jewish people celebrate the head of the month, traditionally, women are rewarded for not participating in the sin of the Golden Calf, and many women take the day to honour the Shechinah, the feminine mystical aspect of the divine. Literally meaning “dwelling,” the Shechinah relates to G-d’s close and relational presence amongst people, such as in the Temple. In Kabbalah, since the word is grammatically feminine, the Shechinah is seen as the feminine aspect of G-d, representing a nurturing, compassionate presence, an almost motherly form of the divine. But how can we honour the Shechinah specific to Tishrei?

Rosh Hashanah provides a straightforward answer: New Year’s resolutions. A tradition observed across the globe, by people of all traditions and faiths, we can apply the idea to our New Year, and think of ways to improve in the year 5787. Make a resolution to join a women’s group at your synagogue or JCC, support woman-owned businesses (the SHE-Canada directory can help you find them!), read up on feminist theory or history, or mentor a young girl in your community. And, like traditional resolutions, don’t kick yourself if you slip up!

While we listen to the shofar, recall that its sound awakens the soul, mystically preparing us all for the Shechinah’s manifest presence on Yom Kippur, when it comes to earth to bring realignment and forgiveness.

Yom Kippur, the Day of Atonement, also offers a way to embrace your feminine side. On this day, we are prohibited from all work, and physical pleasures; though it may sound counter-intuitive, this is the perfect day to be aware of your womanhood in its most natural state. No adornments, no makeup, no perfume, no fancy shoes, no gold jewelry. This is a day when we can see who we are without the extras, as G-d made us, and be aware of the beauty in our creation as is. Also, for any women who are pregnant, nursing, or otherwise exempt from the holiday restrictions, isn’t it amazing to know that our Creator values our health over all?

Sukkot offers a time to appreciate the bounty that G-d has provided over the past year, but what I want to call attention to is the Four Kinds. The etrog has both taste and aroma, the lulav’s fruit, the date, has taste but no aroma, the hadas has aroma but no taste, and the aravah has no taste nor aroma; at some point in our life, and likely at some point in the month, we are all like one of the Four Kinds. The Midrash drew a comparison between taste and Torah learning and between aroma and good deeds. Sometimes, we have etrog moments, when we have a perfect balance between learning and doing, we are in harmony. Sometimes, we have lulav moments, when we prioritize learning over worldly involvement. Sometimes, we have hadas moments, when we prioritize action over enlightenment. And sometimes, we have aravah moments, when we have no energy for learning nor doing. All of these are necessary for living, and during the month of Tishrei, we can appreciate each of these moments. As we sit in our Sukkah, we are wrapped in the wings of the Shechinah, and experiencing its divine protection as we celebrate the Festival of Ingathering.

Shemini Atzeret begins our prayers for rain, and here’s where I get a little extra mystical. Rain is connected to femininity through its association with the womb of creation, fertility, and gentle power which renews life. In Genesis, G-d creates the world from a formless void, using language which conveys ideas of a cosmic womb, a life-generating space which G-d filled with his purpose to design our world. As humanity was created in G-d’s image, the womb metaphor is solidified. As rain comes, it revives the earth, making it fertile, restoring the feminine principles of creativity, emotional depth, and spiritual renewal in the very land we walk on. Rain comes most often as a gentle power, one which arrives calmly, sustaining all life.

Simchat Torah is the time when we celebrate finishing the annual cycle of reading the entire Torah and beginning again. Here, we are brought back to Rosh Hashanah and its new beginnings, with an added layer of holiness and celebration. On this day, it is tradition to dance and revel in the joy of our peoplehood, our identity, our Jewishness, and, let’s add, our femininity. G-d has given us a remarkable gift by making us women. While we revel in the holiness of Torah, let us also revel in the holiness of womanhood.

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The tragedy of Clara Haber

By DAVID TOPPER This story of the sad and short life of a remarkable woman, Clara Haber, should be better known. I hope this essay is a step in that direction. Her legacy deserves it.
She was born Clara Helene Immerwahr on June 21, 1870 to two Jewish parents. Interestingly, the German surname breaks down into: immer (always, forever, still) and wahr (true, real, right). Take your pick. I like: Still real.  
Being smart and hardworking, she was the first woman to obtain a doctorate in Chemistry from the University of Breslau, part of Germany at the time (today it’s in Poland). This was in 1900. Several years before that, she had converted to Christianity. A year later, 1901, she married Fritz Haber, who also had a doctorate in Chemistry. (He was from Breslau too; they met at a dance.) He was two years older than her, and he also had converted to Christianity, in the early 1890s.
This act of conversion – starting in the early 19th century, when, on the heels of the French Revolution, Jews came out of their ghettos – was more common among European Jews than you might think. There were about 2000 conversions per year throughout the century. Some famous ones are: the poet Heine, the mathematician Kronecker, and the composers Mendelssohn and Mahler. In most cases it was the only road to prestigious appointments, otherwise restricted to Christians.
On June 1, 1902 Clara gave birth to what would be their only child, Hermann. The job of raising Hermann was given to her, Fritz being too busy with his important work in his Chemistry Lab – thus ignoring her work in Chemistry. He put in 18-hour workdays, barely leaving time for dinner (if he ate at home) and some sleep. Plus, Hermann was a sickly child, and hence Clara spent all her time raising him – without Fritz. In letters she spoke of her unhappiness in the marriage: especially “Fritz’s oppressive way of putting himself first in our home and marriage, so that a less ruthlessly self-assertive personality was simply destroyed.” These are harsh and powerful words, expressing her extreme disillusionment and frustration with her married life. Yet it was true; her potentially successful career in Chemistry was dead. She never accomplished anything after her degree. The family and household took all her time and energy.   
What, therefore, was this important work that kept Fritz busy and out of the home? He was the Director of the Institute for Chemistry in Berlin. His first major discovery was synthesizing ammonia from nitrogen gas and hydrogen gas, which revolutionized the production of fertilizer. The result was higher yields in agriculture throughout Europe and eventually the world. (Even today, it’s been estimated that food produced from this process supports almost half of the world’s population.)  For this Haber was seen as a hero, alleviating otherwise mass starvation. In 1918 he got the Nobel Prize in Chemistry for this work.  
But there was a flipside to all this: the fertilizer could also be used to make explosives. This too Fritz explored, especially with the start of the First World War in August 1914. Out of this work came poison gases, and thus the creation of chemical warfare.
Fritz was a staunch German patriot and nationalist, supporting the War from the beginning. For example, he signed the “Manifesto of the Ninety-Three,” with other German intellectuals in support of the War. (Incidentally, Albert Einstein, who was living in Berlin at this time – they were good friends – refused to sign the document.)
Fritz not only worked in the lab producing the chemical, he was also involved in supervising their deployment on the war front. Thus, he was in Ypres (near Flanders), Belgium on April 22, 1915. As one historian has drolly put it: “The small Belgium city of Ypres is to chemistry what Hiroshima is to physics.” Indeed, this was the first use of chemical weapons in military history. They released around 170 tons of poison gas across a 4-mile front. There were an estimated 800- 1400 immediate deaths among the French and Algerian troops. Fritz left before the battle was over. During the entire so-called Second Battle of Ypres, from April 22 to May 25 – there were over 67,000 casualties among the French, Canadian, and British troops. 
 (As an aside: this battle was commemorated by John McCrae, who wrote “In Flanders Fields,” a poem recited every Remembrance Day here in Canada.)
Leaving Belgium, and after a brief stay at home, Haber immediately went to the Eastern Front to oversee gas released against the Russian Army. For all this work, he was given the rank of Captain by the Kaiser.
Meanwhile, Clara, usually alone, was raising Hermann, and taking care of the household, not having time to explore all the chemistry she would like to do. In letters she says that her husband’s work with poison gases is a “perversion of the ideals of science” and “a sign of barbarity, corrupting the very discipline which ought to bring new insights into life.” She also witnessed the accidental death of a former classmate, who was in Fritz’s lab working with these chemicals. To make matters worse, she was hearing rumours of Fritz’s involvement with other women. (Humm, it seems he found time for that!)
When Fritz returned home from Belgium (I don’t know the exact date), and before he left for Russia on May 3rd, there was a celebration at their home on the success of the gas attack. There are reports of arguments between Fritz and Clara, but we don’t know the details. What we do know, as a fact, is this. On the following morning, May 2, 1915, Clara took Fritz’s military pistol and walked into their garden. She shot into the air (presumably to test the gun) and then, pointing it into her chest – she pulled the trigger. Hermann heard the shots, ran into the garden – and his mother died in his arms. The following morning, Fritz left for Russia, to supervise the gas attack on the Eastern Front.
At this point in my story, Clara is gone. But there’s more to tell, and – if she knew the rest – I’m sure she would want the reader to know it too. Especially this.
During the final weeks of the First World War, on the Western Front, the Allies now launched a series of gas attacks in the district of Ypres on the Germans. On the night of October 13-14, 1918, just south of Ypres, in the town of Wervik (or Werwick), the British forces used mustard gas on the 16th Bavarian Reserve Infantry Regiment. One German corporal serving as a messenger in the army was caught in the attack, and was partially blinded. He was able to stagger to safety and eventually was taken to a military hospital in Germany to recover. We know about this because he wrote about it in his 1925 book, Mein Kampf. Adolph Hitler recalled: “I stumbled and tottered back with burning eyes…. [M]y eyes were turned into glowing coals; it had grown dark around me.” He was still in hospital at the end of the War on November 11, 1918, at the signing of the Armistice with Germany’s surrender. While lying blinded, he says he had a vision to enter politics to “save” Germany. How much this is true and how much perhaps psychosomatic, due to the shock of the mustard gas – or just plain hyperbole – we will never know. But it led to his myth of Germany’s “stab in the back” – and all that followed with the rise of the Nazi Party.
In 1933, when the Party took over the country, Fritz was still alive. During the 1920s he had a staff at the Kaiser Wilhelm Institute developing more gases, such as the cyanide gas formulation, Zyklon A, which was used as an insecticide to spray on plants. In the spring of 1933, with the passing of Hitler’s law of removing all Jews in professional jobs throughout the country, Fritz was stunned. But it was worse. Fritz not only lost his job: but all his awarded metals, his many accolades, the staunch patriotism and nationalism, his service to the country, even the conversion to Christianity – it all came to naught, since he was a Jew by birth. Thus: his legacy was completely erased from all records, in all German history – as if he never had even existed.
And so, in August, he left the country. He first went to Paris, then to Spain, England, and finally Switzerland. He even took a brief trip to Palestine, where he bequeathed his private Library to the nascent Weizmann Institute, and was offered a position there. He accepted it, but never fulfilled it. He died of severe coronary sclerosis in Basel, on January 29, 1934 at the age of 65.
A major outcome of the Nazification of Germany, as we know, was World War Two. And with that – the Holocaust. Both Clara and Fritz died before all that; but not members of their families.  
Most of Clara’s families were assimilated Jewish professionals and intellectuals, which was no buffer to the Nazi plague. Most of the Immerwahrs died in Auschwitz or Theresienstadt. Only a few had fled to France and then the USA. None was in Germany in post-1945.
As for Fritz’s family, he had a younger half-sister, Frieda. She fled to Jerusalem and survived the war. But her children and grandchildren all died in Auschwitz.
Also, after Clara died, Fritz later married Charlotte Nathan. They had two children: Eva and Ludwig. Just before he died, Fritz sent them to Switzerland; from there all three went to England, surviving the Holocaust.
Then there is Hermann, the only child of Clara and Fritz. After the Nazi party took over Germany, Hermann immigrated to the USA. There he married and had a child, Claire, who became a chemist. Not surprisingly, he had episodes of depression over his adult life, eventually committing suicide in 1946. Sometime later, Claire did the same.
As a final point in this part of my story, I note the following fact. The pesticide gas, Zyklon A from Faber’s lab contained an odorant – to warn users. When the Nazis took over Faber’s lab in the Institute, they removed the odorant, producing Zyklon B, the gas used in the mass murders in the gas chambers during the Holocaust.
 As a coda to this story, I wish to compare Clara’s story with Mileva Marić, Einstein’s first wife. The reason for this will be seen below.
In brief, here’s Mileva’s story. Born in 1875 to a Christian Orthodox Serbian family, she had a dislocated hip that resulted in her walking with a limp all her life. Although this isolated her as a child growing up, she had a very loving and doting father who encouraged his very bright daughter in her school work (she was especially good at math) and was proficient at the piano. Moreover, she was the first girl to attend high school physics courses in the entire Austro-Hungarian Empire.
After graduation, she applied to the prestigious Zurich Polytechnic, since (as we saw) Switzerland admitted women to all classes. She passed the entrance exam and majored in Mathematics. With all this potential, it seemed that the future was hers to make, even as a woman. Then, in a small Physics course, she met Einstein. They quickly became a couple. Except for the time they spent together, Mileva still did her school work and passed all her courses over the first three years.
In her fourth year she started on a thesis, hoping to get a PhD. But she failed her final exams. She repeated them, but still didn’t pass. What happened? I find it hard to believe that this sudden change in her performance was due to the tests being too tough for her – after all that she achieved up to this time. The thing that was different – and which I believe was the source of her predicament – is this: she was pregnant with a child fathered by Albert. With the baby in her belly, she just couldn’t concentrate on the tests.
She went home to her parents and the child was born (a girl, they named Lieserl). Being illegitimate, Lieserl was left with her parents (who were very supportive) and Mileva went back to live with Albert. They married in January 1903, in a small civil ceremony. Neither set of parents was there. And so, Mileva became a housewife – and eventually the mother of two boys. Like Clara, all the earlier promises came to naught. Mileva didn’t even get a university degree – let alone her aspiration of a PhD.
By around 1909 Albert was being noticed by the physics community for his publications on relativity (a subject he essentially created) and quantum physics. Mileva wrote to her closest friend that Albert “lives only for his work” and that the family “is unimportant to him.” This strain on the marriage came to a peak in the spring of 1914 when they moved to Berlin, where he had accepted a prestigious position in the Physics section of Kaiser Wilhelm Institute.
For this we need to come back to Fritz and his friendship with Einstein. In many ways their friendship was unexpected, since (except for being born Jewish) they had little in common – opposite on the topics of nationalism, patriotism, war (Albert was a pacifist). Even in dress: Fritz was meticulous in his three-piece suits, and Albert sloppy in dress with his hair all over the place. Yet, when they first met in September 1911 at a scientific society meeting in Karlsruhe, they quickly became close friends. In particular, Fritz was so impressed that he became the chief orchestrator to draw Einstein to the position in physics at the Berlin Institute.
Thus, late in 1913, Einstein was offered a position, and he accepted it. But Mileva was reluctant to leave Switzerland. One main reason: Albert had a divorced cousin in Berlin, Elsa, who Mileva knew Albert was visiting when attending meetings in the city. She even suspected (correctly) that it was an intimate relationship.
Nonetheless, around Christmas 1913, Mileva traveled to Berlin to look for a place to live. She stayed with Fritz and Clara, and – not surprisingly, from all we know about them – the two women quickly and deeply bonded. They certainly had lots to talk about: given their similar situations regarding their stifled careers and abusive husbands. Mileva found an apartment, and in April 1914 she, Albert, and their two boys moved to Berlin. 
They were not there for even a month, and the marriage entered a new phase. Albert demanded a series of rules for their relationship. Mileva was to do the laundry, prepare him three meals a day, and keep his office clean – all without any personal relations, no intimacy, and never being seen in public together. It was degrading and cruel; she was reduced to being a maid and a cook.
Mileva tried to accept all this, but quickly found that she couldn’t endure the humiliation. Fritz and Clara knew about all this. Clara consoled Mileva. Fritz acted as a mediator, as the marriage completely broke down. Fritz was a witness, signing the separation agreement. In July 1914 Mileva packed up her things, and she and the two boys went back to Switzerland, where she lived for the rest of her life. The following month was the start of the War – and, ultimately, in May 1915, Clara’s suicide.    
There it is: Clara’s sad story, and how it overlapped with Mileva Einstein’s story – with ultimately their short, but profound, friendship.
I hope all this helps bring to light the legacy of this potentially brilliant, surely fascinating, and ultimately tragic woman.
Clara Helene Immerwahr Haber is long gone. Yet, for me, she is: Still real.

  • *
    Readings:
    For Albert’s abusive treatment of Mileva, see: David Topper, “The Dark Side of Albert: Einstein and Mileva Marić, his First Wife,” published in The Academy of the Heart and Mind, February 7, 2025.
    For the quotation comparing Ypres and Hiroshima, see: Jörgen Neffe, Einstein: A Biography (2005), p. 252.

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