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A German town built a granary atop its Jewish cemetery. Now the bones are yielding insights about Ashkenazi DNA.
BERLIN (JTA) – The city of Erfurt in central Germany is home to an impeccably restored medieval synagogue made possible because local Jews had been expelled long before the Nazis began their campaign to destroy Jewish sites.
Now, Erfurt’s long-hidden Jewish past is again offering new insights — this time about the genetic history of Ashkenazi Jews.
Human remains from a medieval Jewish cemetery in Erfurt have allowed what researchers say is the largest ancient Jewish DNA study to date. Conducted without disinterring any remains, in keeping with Jewish law, the study published Wednesday in the scientific journal Cell found that Erfurt’s medieval Jewish community was more genetically diverse than their modern-day cousins, and carried many of the same Jewish genetic diseases — such as Tay Sachs and cystic fibrosis — that affect Ashkenazi Jews today.
“There have been many previous DNA studies, but not of Jews,” said geneticist Shai Carmi, a professor at the Hebrew University of Jerusalem, whose search for study material led him to an archaeological dig at the Jewish cemetery in Erfurt. He and his collaborators were able to analyze DNA of 33 individuals who died between 1270 and 1400, using teeth they found there.
The study follows a similar analysis revealed in August by researchers in England, who studied the DNA from skeletons found at the bottom of a medieval well and concluded that the remains were likely of victims of an antisemitic massacre in 1190. Analysis of six individuals prior to their identification as Jewish revealed that Ashkenazi Jews developed a unique genetic variation centuries earlier than realized.
The Erfurt analysis also includes samples from before the epidemic of Black Death that was until recently understood to have created the genetic “bottleneck” that created the genetic markers common among Ashkenazi Jews today.
Erfurt’s Jewish settlement existed from the 11th to 15th century, with a brief gap following a 1349 massacre perpetrated after the Jews were falsely blamed for causing the bubonic plague. Surviving Jews returned there, but after all Jews were expelled once and for all in 1454, the city built a granary on top of the Jewish cemetery.
Karin Sczech participates in the excavation at the medieval Jewish cemetery of Erfurt. (Courtesy of TLDA Ronny Krause)
In 2013, the city approved the repurposing of the unused granary into a parking lot. Because it was an historic site, a rescue excavation was initiated, overseen for the State of Thuringia by German archaeologist Karin Sczech.
Meanwhile, Carmi had been looking for Jewish cemeteries anywhere in the world “where we could analyze remains already excavated,” he told JTA in a telephone interview from Jerusalem. “I consulted historians and eventually reached the archeologist in Erfurt.” Fortunately, he said, “they still hadn’t reburied the remains.”
He approached Sczech, who later became a co-author of the new study. In 2018, with a supportive judgment from Rabbi Ze’ev Litke — an Israeli expert on genetics and Jewish law — and permission from Erfurt’s then-rabbi, Benjamin Kochan, work began to extract and analyze DNA from detached teeth found in the graves. (About 500 Jews live in Erfurt today, most of them having migrated from the former Soviet Union since 1990.)
American geneticist David Reich picked up the teeth and brought them back to the department of human evolutionary biology at Harvard University in Cambridge, Massachusetts, where drilling and DNA extraction took place.
While the skeletons were reburied, the teeth are still stored at the research institutes where they have been analyzed, in case scientists need to retest to verify the result.
The project provides an ethical basis for studies of ancient Jewish DNA, Carmi said. “Of course we couldn’t just go to a cemetery and dig and take out skeletons; this would be prohibited,” he said, referring to Jewish law prohibiting the removal of bones from where someone was buried.
But Litke opined that the study could be done, because the bones already had been disturbed for an unrelated reason. “He recommended using teeth, as the analysis does almost no damage,” Carmi said.
There are many motivations to study Jewish DNA: One can find lost relatives going back a few generations, and answer questions about Jewish origin of partners intending to marry. But the goal of Carmi’s team was “to fill the gaps in our understanding of Ashkenazi Jewish early history.”
There are several non-destructive ways to obtain DNA from human remains, said Carmi, who also works as a consultant to an Israeli firm that helps clients trace their genetic roots.
“You can take an almost microscopic slice of bone and extract DNA in a solution, or put the entire bone in a solution and extract the DNA without drilling, without disturbing the dead. This opens the way to doing studies even without teeth,” he added.
His team found that the Erfurt community appeared to fit into two genetically distinct groups, descending either from Middle Eastern or European populations. This genetic variability no longer exists, Carmi said.
At the same time, Carmi said, the analysis found remarkable continuity in the local community, as well. “One third of the Erfurt individuals descended from one woman through their maternal lines,” he said, adding that evidence suggested that she lived between 1,000 and 2,000 years ago.
In a press statement, geneticist Reich of Harvard said the work “also provides a template for how a co-analysis of modern and ancient DNA data can shed light on the past. Studies like this hold great promise not only for understanding Jewish history, but also that of any population.”
The research team, with more than 30 scientists, included Hebrew University’s Shamam Waldman, a doctoral student in Carmi’s group, who performed most of the data analysis.
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Trump Touts ‘Peace Through Strength’ in State of the Union, but Results Are Mixed
US President Donald Trump gestures on the day he delivers the State of the Union address in the House Chamber of the US Capitol in Washington, DC, US, Feb. 24, 2026. Photo: REUTERS/NATHAN HOWARD
“Peace through strength” is a foreign policy motto that has served President Donald Trump well — when he has adhered to it.
In his hyper-partisan State of the Union address on Tuesday, there was a rare moment of strength through unity. When Trump noted the return of all Israeli hostages from Gaza, Republicans and Democrats alike — except for Congress’s most noxious members — joined in a standing ovation. Among the many conflicts Trump took credit for ending in his speech, the Gaza ceasefire is, perhaps, the one for which he deserves the most credit.
Trump praised Hamas for working to recover the bodies of the last captives despite the fact that a high-ranking Israeli military official said that the terrorist group did not assist in the recovery of the body of Ran Gvili, the final hostage rescued from Gaza.
Trump noted Gvili’s mother’s relief to bury her son. Speaker of the House Mike Johnson also humanized Israeli victims of violence by inviting as his guest the brother of an Israeli Embassy staffer gunned down in Washington, DC, while attending a Jewish event.
But what Israel watchers were looking for was a sign indicating whether Trump would strike Iran with military force. Not surprisingly, the president did not give the order from the dais or press a big red button to launch the operation. But he left his tea leaves out in the open.
Exaggerating somewhat, Trump noted the successful Operation Midnight Hammer from June 2025 that “obliterated Iran’s nuclear weapons program” but acknowledged that Iran is busy rebuilding its nuclear weapons capabilities.
Iranians may be forgiven for a certain skepticism about Trump’s intentions going forward — whether he will indeed display the strength needed to keep the peace. In January, at the height of the protests against the Islamic Republic, the US president told the Iranians demonstrating in the streets that “help is on its way” and warned Tehran to “stop killing protesters.” But the Islamic Republic drowned Trump’s red line in a sea of its citizens’ blood.
In the weeks leading up to the State of the Union, the US military moved two aircraft carrier strike groups into the region and landed a group of F-22 Raptor jets in Israel — a lot of firepower. But to justify an attack, Trump wants to demonstrate that he has exhausted the diplomatic route.
Noting the negotiations with Iran, Trump declared, “My preference is to solve this problem through diplomacy.” But, Trump stated, the Iranians haven’t forsworn nuclear weapons. Trump additionally mentioned the Islamic Republic’s ballistic missile program and its support of terrorist proxies as causes for concern.
Trump has also undermined his mantra through his unwillingness to seriously challenge Russia to end its aggression in Ukraine during his second term, let alone within the 24 hours he promised on the campaign trail.
During his State of the Union address, Trump said his administration is working “very hard” to end the war. But the effort has not yet borne fruit.
He lamented “the killing and slaughter between Russia and Ukraine, where 25,000 soldiers are dying each and every month.”
That was the only mention of the four-year-long war in nearly two hours of speaking. Trump appears frustrated that his Midas touch in international peacemaking has exceeded his grasp. But he partly has himself to blame for rushing headlong into negotiations without first maximizing military or economic pressure on Russia, attempting peace without demonstrating strength.
Trump could have proactively built negotiating leverage against Russian President Vladimir Putin by strengthening Ukraine’s ability to withstand the Russian onslaught while applying stronger sanctions on the Russian economy. Instead, he slashed military assistance for Kyiv and waited nine months to impose sanctions targeting Russian oil companies Rosneft and Lukoil. Even then, his administration has not enforced those sanctions, reducing their impact.
Trump rolled out the red carpet for Putin in August for what he thought would be a productive one-on-one meeting. Instead, Putin embarrassed the president by lecturing him on Russian history while refusing to back down from his maximalist demands.
Trump’s negotiators, Steve Witkoff and son-in-law Jared Kushner, have accomplished just as little in the same period. With Russia continuing to demand Ukrainian territory in the Donbas that its military cannot take by force, the White House has leaned on Ukraine to make territorial concessions, believing this will unlock peace. But that’s both unacceptable to Kyiv and insufficient to satisfy Putin, whose ultimate objective is to dominate Ukraine as a whole.
To his credit, Trump extracted a commitment from NATO members to spend 5 percent of their GDP toward defense and other security-related priorities, improving burden sharing. But Washington has added needless strain to transatlantic ties by meddling in European domestic politics, launching a self-defeating trade war, and attempting to bully Denmark into ceding Greenland to the United States.
As Trump put it in his speech, “We have to be strong, because hopefully we will seldom have to use this great power.” Washington can best deter its enemies when it applies its “peace through strength” approach forcefully and consistently and when it nurtures strong alliances rather than upending them.
David May is a research manager and senior research analyst at the Foundation for Defense of Democracies (FDD), where Dmitriy Shapiro is a research analyst and editor. For more analysis from the authors and FDD, please subscribe HERE. Follow David on X @DavidSamuelMay and Dmitriy @dmitriyshapiro. Follow FDD on X @FDD. FDD is a Washington, DC-based, nonpartisan research institute focusing on national security and foreign policy.
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Four Years After Russia’s Full-Scale Invasion, Peace Requires Leverage — Not Capitulation
Rescuers work at the site of the apartment building hit by a Russian drone during a Russian missile and drone strike, amid Russia’s attack on Ukraine, in Kyiv, Ukraine, Dec. 27, 2025. Photo: REUTERS/Viacheslav Ratynskyi
Four years ago, Russian armored columns pushed toward Kyiv, expecting a swift collapse of the Ukrainian state. That collapse never came.
Russia failed in its central objective. Kyiv did not fall. Ukraine’s government did not crumble. NATO did not fracture. What Vladimir Putin sought to prevent remains intact: a sovereign, Western-aligned Ukraine.
Russia today occupies roughly one-fifth of Ukraine’s territory, including Crimea and large swaths of the Donetsk, Luhansk, Zaporizhzhia, and Kherson regions. Much of that territory was seized either in 2014 or during the early months of the 2022 invasion. Since then, Moscow’s gains have been incremental and costly, measured in devastated villages rather than decisive breakthroughs.
Ukraine, despite facing a significant infantry shortage, continues to hold Russia to incremental gains while inflicting heavy casualties. The war has killed or wounded hundreds of thousands of soldiers and displaced millions of civilians. Cities such as Mariupol, Bakhmut, and Severodonetsk lie in ruins.
But the consequences of this war extend far beyond Ukraine’s borders. Europe has begun to rearm, addressing chronic underinvestment in defense since the end of the Cold War. As a result of the Russian invasion, Finland and Sweden joined NATO, doubling the alliance’s border with Russia, a strategic setback the Kremlin apparently didn’t anticipate. Energy markets have been reshaped as European states have largely weaned themselves off Russian oil and gas. Washington and its allies have been forced to rethink deterrence, force posture, and industrial capacity for sustained conflict.
In Ukraine, Putin faces a dilemma: he cannot impose the outcome he wants on the battlefield, yet he refuses to scale back his maximalist demands. So, the Kremlin has turned negotiations into another front in the war. Moscow has sought to use diplomacy to split the United States from Ukraine and Europe and enlist US help in forcing Kyiv to swallow Putin’s terms. The Kremlin demands that Ukraine cede the remainder of its eastern Donbas region, abandon its aspirations of joining NATO, accept limits on its military’s size and capabilities, and enshrine legal protections for Russian cultural influence. In short, Putin seeks to achieve through diplomacy what Russia has failed to secure decisively through force.
That approach only works if Moscow believes time is on its side. At present, the Kremlin appears to calculate that Western political divisions will deepen and that Russia can eventually exhaust Ukraine’s resistance. Until Putin’s calculus changes, diplomacy without leverage will not moderate Russian objectives. It will entrench them.
Shifting that calculation requires raising the cost of continued aggression and making Putin understand that neither Western will nor Ukrainian resistance will break. The United States retains significant tools to do so. Rather than slashing military assistance for Kyiv as the Trump administration has done, additional support can help Ukraine increase the price Russia pays for its battlefield advances. Strictly enforcing and building upon existing sanctions, particularly on the energy revenues that finance the war, can tighten economic pressure on the Kremlin.
Pressure, steadily applied, can shape negotiating behavior. Concessions offered prematurely are counterproductive. By leaning on Kyiv to bend to Moscow’s demands, Washington risks reinforcing Kremlin intransigence. And by rushing into negotiations without first establishing leverage, the Trump administration wasted valuable time.
Ending the war is a worthy objective. But the terms matter. A settlement that emboldens Russian revanchism or merely grants Moscow time to rearm for a follow-on war would damage US interests — with implications extending well beyond Ukraine. It would undermine the credibility of US security guarantees, destabilize Europe’s security architecture, and shift American strategic bandwidth away from higher-priority theaters.
Four years into this war, the lesson is not that diplomacy is futile. It is that diplomacy must be facilitated with strength. The United States still possesses the tools to create that leverage. Using them is not escalation. It’s smart negotiating.
Keti Korkiya is a research analyst in the Russia Program at the Foundation for Defense of Democracies (FDD).
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The Jewish Audacity to Have Vision Against All Odds
Rabbi Yosef Shlomo Kahaneman in June 1953. Photo: Phto Birnfeld, Tel Aviv / National Library of Israel, Schwadron collection via Wikimedia Commons
We have all suffered the frustration of dealing with construction delays. But the news this week out of Spain should give us all pause. In Barcelona, cranes gently hoisted the final 12-ton section into place completing the central tower of the Sagrada Família cathedral, bringing the structure to its full height of 172.5 meters and officially making it the tallest church in the world. The construction project has finally been completed … after 144 years.
You read that right. Ground was broken in 1882. A year later, the eccentric architect Antoni Gaudí began the project in earnest. He devoted the remainder of his life to Sagrada Família, and died a century ago, in 1926, with less than a quarter of it built.
Wars intervened. Funding evaporated. Portions of his original models were destroyed. George Orwell dismissed it as “one of the most hideous buildings in the world,” and remarked wryly that the anarchists who controlled Barcelona while he lived there showed poor taste in not blowing it up.
And yet, finally, this week, crowds gathered to watch as cranes completed a vision that originated in the 19th century. It is hard to think of anything more bizarre in our age of instant results and overnight success than a project that spans nearly a century and a half — except perhaps the audacity of the man who designed it knowing full well he would never live to see it finished.
Gaudí once remarked, almost casually, “My client is not in a hurry,” meaning God. It was a line delivered with a shrug, but it contained his entire philosophy. What Gaudí saw in his mind’s eye would emerge, and he knew it.
What makes the story so extraordinary is that Gaudí was not sketching fantasy in the vague hope that some future engineer would figure out how to put it all together.
Gaudí constructed meticulous scale models. He calculated load-bearing curves with obsessive care. He suspended chains from ceilings and used mirrors to study how gravity naturally shaped arches, effectively reverse-engineering physics long before computer modeling made such things easy.
His vision was undeniably romantic — but it was also rigorously disciplined. He imagined something magnificent, and then he subjected that imagination to mathematics, materials, and method. He was planning, deliberately and patiently, toward a future he knew with absolute certainty he would never live to see.
The Jewish people understand that kind of vision very well. Amid the Second World War, as European Jewish life lay in smoking ruins and every yeshivah had been obliterated together with their students and rabbinic faculty, one man in Eretz Yisrael began speaking about the future in a way that made some of his contemporaries quietly wonder whether grief had unhinged him.
His name was Rabbi Yosef Shlomo Kahaneman, but he is better known as the Ponevezher Rav. He managed to escape the inferno of Europe, but his community in Ponevezh had been annihilated, along with his beloved yeshiva — once one of the crown jewels of prewar Lithuania.
The Ponevezher Rav’s world had been erased. Most people in his position would have focused on survival, on securing a modest foothold in a fragile new country, on mourning what could never be restored. Instead, he focused on rebuilding — not cautiously, but on a scale that seemed to defy the broken reality around him.
One day in 1944, even as the Holocaust still raged and the fate of millions hung in the balance, Rav Kahaneman climbed a barren hill in Bnei Brak and declared that he intended to build the greatest yeshiva in the world.
And then, astonishingly, he began raising funds. People thought he had lost his mind. There were barely any serious yeshiva students in Eretz Yisrael at the time. The economy was fragile. The British Mandate was unstable. Arab opposition to Jewish statehood was intensifying by the day. The idea of constructing a vast Torah citadel under those conditions felt detached from reality, almost delusional.
But the building went up anyway — stone by stone, floor by floor — until a grand edifice crowned the hill. When it opened, the cavernous beit midrash stood largely empty. A handful of students sat in a corner learning Gemara in a vast space designed for over a thousand yeshiva boys.
The image must have been surreal: a monumental structure with barely enough students to fill a corner. As it was going up, someone had asked the Ponevezher Rav whether this enormous building was not, perhaps, a touch ambitious. Would it not be wiser to start modestly and expand later?
His response has echoed through the decades: You do not build a small yeshiva and hope it becomes great. You build a great yeshiva — and then you fill it.
He could already see what others could not yet see — generations of students, the hum of Torah, and the glorious restoration of what was destroyed. Because the vision in his mind was so vivid, for him it wasn’t a vision; it was reality. And in time, it became reality.
It is precisely this energy that pulses through the Haftarah for Parshat Tetzaveh (Ez. 43:10–27), which contains one of Ezekiel’s most remarkable prophecies. He is not standing in bustling Jerusalem. He is in exile. The First Temple has been destroyed, its vessels looted, its glory extinguished, and the Jewish nation has been dragged to Babylonia in chains. The present is bleak, and the future seems hopeless.
And yet, in that very setting, God instructs Ezekiel to talk to the people about the Temple to be rebuilt in Jerusalem. The prophecy is dazzling, comprising a meticulous blueprint for the Temple, down to the smallest detail. We are given architectural plans, dimensions, measurements, and procedures, along with a seven-day dedication sequence laid out with methodical clarity.
Can you imagine how this must have sounded to a beleaguered nation whose hopes for revival could easily have been dismissed as delusional? They are sitting by the rivers of Babylon, mourning what has been lost — and the prophet is discussing the floor plan of a Temple that does not yet exist. It borders on ridiculous.
But that is exactly the point. When you can picture the future clearly enough — when you can measure it, describe it, and it vividly inhabits your imagination — you begin, quietly but powerfully, to live differently in the present.
Gaudí did not live to see his church completed, but the clarity of his plans ensured that generations of architects, artisans, and engineers could continue his work long after he was gone. The Ponevezher Rav did not know how many students would one day fill his massive yeshiva, but his refusal to think small created the conditions in which greatness could take root.
Ezekiel’s generation did not rebuild the Temple, but they were handed something powerful: a design that made hope structured and concrete rather than sentimental and abstract. There is a profound difference between fantasy and vision. Fantasy floats, untethered from reality, comforting but meaningless. Vision, by contrast, submits itself to measurement. It accepts the discipline of detail. And most importantly, it draws plans.
In our own lives, we often hesitate to articulate what we truly hope for because we are afraid it may never materialize. We temper our ambitions, soften our aspirations, and downsize our dreams in order to shield ourselves from disappointment. We build small because small feels safer.
But Judaism has never been a small-building civilization. Three times a day we pray for the rebuilding of Jerusalem, in deliberate, specific language. It is blueprint before redemption. The Jewish story is about seeing beyond the current constraints, and then proceeding methodically in quiet determination.
And one day — sometimes decades later, sometimes a century later — the cranes come down, the halls fill with voices, and the towers stand complete.
The author is a rabbi in Beverly Hills, California.
