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How a Quiet Dutch Retiree Helped Uncover Nazi-Stolen Art in Argentina
FILE PHOTO: Curator Ariel Bassano addresses the media next to a portrait of Contessa Colleoni, attributed to Italian artist Giuseppe Ghislandi, an iconic painting stolen decades ago by the Nazis, following its recovery by Argentine officials after it was spotted in a real estate photo, in Mar del Plata, Argentina September 3, 2025. Photo: REUTERS/Jose Scalzo/File Photo
Dutch systems specialist Paul Post had glimpsed the notebooks that contained his father’s Nazi-era diaries before, but when he rediscovered them in an attic 15 years ago, the recent retiree finally had time to closely examine them.
Post, 74, had no idea that they would ultimately lead to Argentina, where in September the daughter of a high-ranking Nazi official was charged with concealing an 18th-century painting looted during the Holocaust.
In his diaries, Post’s father described working in the Netherlands’ diamond bureau when it was taken over by the Nazis. As Post began researching the events, one name jumped out: the Nazi official Friedrich Kadgien.
Kadgien oversaw the Nazi looting of diamonds and gold from occupied countries. Post began to follow Kadgien’s wanderings after the war, hoping to solve the mystery of the diamonds that historians say are still missing. He learned by chance that Kadgien was believed to have also possessed looted art.
The hunt led him and Dutch journalists to the peaceful residential neighborhood home of Patricia Kadgien, 60, in the seaside town of Mar del Plata in Buenos Aires province, where “Portrait of a Lady” had been hanging prominently in her living room. The reporters spotted it in a real estate listing in August.
Her attorney, Carlos Murias, told Reuters that she did not know about claims the painting had been looted from the collection of Jewish art dealer Jacques Goudstikker and she has denied having hidden it.
Nazi-related discoveries like this occasionally pop up in Argentina, which after the war received both Holocaust survivors and dozens of Nazi war criminals, including Adolf Eichmann and Josef Mengele. In February, President Javier Milei met with representatives of the Simon Wiesenthal Center, who asked for help accessing materials to investigate Nazi banking activities in Argentina. And last May, the Supreme Court announced it had found thousands of Nazi labor organization membership booklets in its basement archive.
Post’s unlikely role in the painting’s discovery underscores the complexities of finding Nazi-looted art today. An estimated 600,000 pieces were stolen from Jewish families, and more than 100,000 have never been returned.
“I’m just an amateur, I’m not a historian, nothing at all,” said Post. “I knew I was right on Kadgien.”
A FATHER’S WAR DIARIES RESURFACE
In 2010, Post’s family was cleaning out his mother’s house in Driehuis, a town just outside of Amsterdam. In the attic, they found three diaries written by his father, who died in 1976 at age 60.
In the diaries, Wim Post recounted how in 1942 the Nazis ordered the country’s diamond traders to turn over their precious stones, confiscating about 71,000 carats at the Amsterdam Diamond Exchange.
Paul Post, then recently retired from Hewlett-Packard, began visiting the Netherlands’ national archives to research the diamond confiscation. There he came across Kadgien’s name.
Shortly before Germany’s surrender in May 1945, Kadgien fled to Switzerland, where officials received a tip that he had carried out large transfers of diamonds, according to Regula Bochsler, a historian in Zurich. But in 1950, Kadgien received a visa to travel to Brazil, ultimately making his way to Buenos Aires.
Post reached out to the Dutch newspaper Algemeen Dagblad to share his father’s account of the diamond raid, and in 2015, investigative reporter Cyril Rosman published a piece about the diaries. Post later published “The Diamond Heist,” a book on the subject.
In 2020, Post noticed that the Cultural Heritage Agency of the Netherlands listed Kadgien online as possibly having possessed “Portrait of a Lady” by the Italian artist Giuseppe Ghislandi — although art historians have said the painter was likely his contemporary Giacomo Ceruti — as well as an Abraham Mignon still life. He met with the agency’s researcher Perry Schrier, and told him he had tracked Kadgien’s family to Mar del Plata. But Schrier, who confirmed he had met with Post, couldn’t help him.
“I said, ‘I think I know the location, where it could be, and that is in Argentina,’” recalled Post. “But he said, ‘Yeah, ok, it could be possible, but how can we know that it is on the wall in their homes?’”
In June 2024, Post contacted Yael Weitz, an attorney for Goudstikker’s family. In an email exchange seen by Reuters, he offered to provide leads on the two missing paintings if she could provide him with information on Kadgien. She ultimately said that her team didn’t have anything to share.
Post then turned to journalists again. Last April, he reached out to Rosman with more information on Kadgien’s post-war travels. They had tried to contact Kadgien’s daughters in Argentina through the years and Rosman asked Peter Schouten, a freelance journalist in Buenos Aires, to try again.
“We were not looking for the paintings in particular,” said Rosman. “At that time we were mostly thinking about the diamonds that were looted, so we wanted to know what happened to that.”
When Schouten rang the bell at Patricia Kadgien’s home in August, there was no answer. But he saw a for-sale sign in her yard. The reporters checked the real-estate listing and spotted the painting in one of the photos of the property. They could barely believe their luck.
“I thought, ok, is it really this simple, a picture that’s missing for 80 years is here above a couch in the living room?” said Rosman.
The day after they published a story on the painting’s discovery, police raided the home. But in the painting’s place was a tapestry of horses. Eight days later, Kadgien’s attorney handed the painting over to authorities.
Federal prosecutors have charged Patricia Kadgien, who runs a small clothing business, and her husband, Juan Carlos Cortegoso, a go-kart mechanic, with aggravated concealment and are investigating more than 20 drawings and prints, as well as two portraits, also seized from their home and from the home of Patricia’s sister in Mar del Plata.
“The attitude was to hide the painting,” the case’s prosecutor, Carlos Martinez, told Reuters. “We think that isn’t indicative of someone that doesn’t know what they have.”
COMPETING CLAIMS TO THE PAINTING
Goudstikker’s family have fought for decades to get his paintings back.
The art collector died when he fell into the hold of a boat as he was fleeing the advancing Nazis with his family in May 1940. But in a small black book, he had listed “Portrait of a Lady” along with more than 1,000 pieces in his collection.
In what historians describe as a forced sale after his death, top Nazi official Hermann Goering purchased about 800 of Goudstikker’s paintings. Weitz, the attorney who represents Goudstikker’s family, said that Goering’s associate, Alois Miedl, sold “Portrait of a Lady” to Kadgien in 1944.
The family has recovered 300 to 350 works of art, including 200 that had been mostly hanging in museums that the Netherlands agreed to return in 2006.
Charlene von Saher, Goudstikker’s granddaughter who lives in Greenwich, Connecticut, said her family informed the Kadgiens of their claim to “Portrait of a Lady” after the journalists published their story. Paolo Plebani, curator at the Accademia Carrara in Bergamo, said it is worth upwards of $100,000, but attorneys for the Goudstikker family said it is impossible to determine the value before examining the condition and confirming the artist’s identity.
“I just hope that they would be people who would feel like doing the right thing and correcting a historical injustice,” von Saher told Reuters, saying that the discovery was “like a movie.”
But Patricia Kadgien hasn’t relented. She has filed a claim in civil court that says her father’s sister-in-law bought the painting from the Wallraf-Richartz Museum in Cologne in 1943. It said the painting was “legitimately possessed” by her father and that she inherited it after he died. The museum told Reuters the painting was never part of its collection.
The claim said that she removed the painting from her home “for security reasons,” thinking she was the victim of “a virtual scam” when she started receiving calls from a journalist in August.
As for Post, he still wants to know what happened to the diamonds that were tied to Kadgien. Martinez, the prosecutor, said authorities did not find jewels of value or from the war-period in the Mar del Plata home.
Saskia Coenen Snyder, a Dutch professor of modern Jewish history at the University of South Carolina, said it is very hard to prove that Nazis took diamonds with them to South America. “I’ll give him credit for at least spending years of his time pursuing, uncovering stories and truths that not everybody wants to do or has been able to,” she said of Post. “He’s a bit of a pit bull.”
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The call of this Hanukkah moment remains simple and urgent: Light candles everywhere. Even when we’re under attack.
The massacre in Sydney has left Jews around the world shaken and grieving. This act is far more than a heinous crime: It is a regression to darker times, when Jewish visibility itself carried mortal risk.
The commandment of Hanukkah is not simply to light candles, but to light them publicly – pirsumei nisa, the publicizing of the miracle. The point is not private consolation, but shared visibility. Jewish survival, the tradition teaches, is not meant to occur behind closed doors, but in full view.
Historically, however, it rarely did. In exile, Jews learned caution. The Talmud records how, in times of danger, the candles are to be moved indoors – lit discreetly, shielded from hostile eyes. This was not a theological revision but a concession to reality: When the public sphere is unsafe, Jewish life retreats into the private domain. For most of our history, this was our reality.
Modern democracies promised something different. Jews would no longer have to choose between safety and visibility. We could light openly again – on windowsills, in public squares, in front of city halls – because the surrounding society would protect us not merely by law, but by norm. Antisemitism would not just be illegal, it would be unthinkable.
The Sydney massacre, alongside countless incidents in societies Jews have long trusted, forces us to ask whether that promise is still being kept.
Jewish safety in the diaspora does not rest primarily on police presence or intelligence services – necessary though they are. It rests on something more fragile and more fundamental: a public culture in which Jews are not merely tolerated but embraced; in which antisemitism is not merely condemned after the fact but rejected instinctively and unequivocally as a violation of the moral order.
When Jews are attacked for being Jews, and the response is muted, conditional, or delayed, the message is unmistakable. Jews may still live here, but only quietly.
That is why the response to Sydney must not be withdrawal, but the exact opposite. We cannot and will not retreat into hiding our light. The call of this moment is simple and urgent: Light candles everywhere.
Jewish communities and organizations must orchestrate public Hanukkah candle lightings in the central squares of democratic cities across Europe, across the English-speaking world, wherever Jews live under the protection of free societies. Not hidden ceremonies. Not fenced-off gatherings on the margins. But civic events, hosted openly and proudly, with the participation of local and national leaders – and of fellow non-Jewish citizens.
This is not unprecedented. Every year, a Hanukkah menorah is lit at the White House. The symbolism is powerful precisely because it is mundane: Jewish light belongs at the heart of the civic space, not as an exception, not as an act of charity, but as a matter of course. That model should now be replicated widely.
Israeli diplomatic missions, together with local Jewish organizations, should work actively with municipalities and governments to make these public lightings happen – not merely as acts of Jewish resilience, but as declarations of democratic commitment. Because this is not only a Jewish question.
A society in which Jews feel compelled to hide their symbols is a society already retreating from its own values. Antisemitism is never a stand-alone phenomenon; it is the canary in the democratic coal mine. Where Jews are unsafe, pluralism is already fraying.
Lighting candles in public squares will not undo the horror of Sydney. But it will answer it – not with fear, and not with silence, but with a refusal to normalize xenophobia, antisemitism, and Jewish invisibility.
The ancient question of Hanukkah – where we light – has returned as a modern moral test of democratic societies and leaders worldwide. Where Jewish light is extinguished, democracy itself is cast into shadow. If it can still be lit openly, with the full backing of the societies Jews call home, then the promise of democratic life remains alive.
Our light must not hide. Not now. Never again.
The post The call of this Hanukkah moment remains simple and urgent: Light candles everywhere. Even when we’re under attack. appeared first on The Forward.
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Australia shooting terrifies Jews worldwide — and strengthens the case for Israel
If the shooters who targeted Jews on a beach in Australia while they were celebrating Hanukkah thought their cowardly act would turn the world against Israel, they were exactly wrong: Randomly killing people at a holiday festival in Sydney makes the case for Israel.
The world wants Jews to disown Israel over Gaza, but bad actors keep proving why Jews worldwide feel such an intense need to have a Jewish state.
Think about it. The vast majority of Jews who settled in Israel went there because they felt they had nowhere else to go. To call the modern state “the ingathering of exiles” softpedals reality and tells only half the story. The ingathering was a result of an outpouring of hate and violence.
Attacking Jews is the best way to rationalize Zionism.
Judaism’s holidays are often (humorously) summarized as, “They tried to kill us, they failed, let’s eat.” Zionism is simply, “They tried to kill us, they failed, let’s move.”
Theodor Herzl, the founder of modern Zionism, didn’t have a religious or even a tribal bone in his body. He would have been happy to stay in Vienna writing light plays and eating sacher torte. But bearing witness to the rise of antisemitism, he saw the Land of Israel as the European Jew’s best option.
The Eastern European pogroms, the Holocaust, the massacre of Jews in Iraq in 1941 — seven years before the State of Israel was founded — the attacks on Jews throughout the Middle East after Israel’s founding, the oppression of Jews in the former Soviet Union — these were what sent Jews to Israel.
How many Australians are thinking the same way this dark morning?
There’s a lot to worry about in Israel. It is, statistically, more dangerous to be Jewish there than anywhere else in the world. But most Jews would rather take their chances on a state created to protect them, instead of one that just keeps promising it will – especially when the government turns a blind eye to antisemitic incitement and refuses to crack down on violent protests, as Australia has.
“For over a year we have seen racist mobs impeding on the rights and freedoms of ordinary Australians. We have been locked out of parts of our cities because the police could not ensure our safety. Students have been told to stay away from campuses. We have been locked down in synagogues,” Alex Ryvchin, the co-CEO of the Executive Council of Australian Jewry, wrote a year ago, after the firebombing attack on a Melbourne synagogue.
Since then a childcare centre in Sydney’s east was set alight by vandals, cars were firebombed, two Australian nurses threatened to kill Jewish patients, to name a few antisemitic incidents. There were 1,654 antisemitic incidents logged in Australia from October 2024 to September 2025 — in a country with about 117,000 Jews.
“The most dangerous thing about terrorism is the over-reaction to it,” the philosopher Yuval Noah Harari said. He was talking about the invasion of Iraq after 9/11, the crackdown on civil liberties and legitimate protest. But surely it’s equally dangerous to underreact to terrorism and terrorist rhetoric.
Israel’s destruction of Gaza following the Hamas attack of Oct. 7, 2023 led to worldwide protests, which is understandable, if not central to why tensions have escalated.
But condemning civilian casualties and calling for Palestinian self-determination — something many Jews support — too often crosses into calls for destroying Israel, demonizing Israelis and their Jews. That’s how Jews heard the phrase “globalize the intifada” — as a justification for the indiscriminate violence against civilians.
When they took issue with protesters cosplaying as Hamas and justifying the Oct. 7 massacre, that’s what they meant. And look at what happened in Bondi Beach, they weren’t wrong. Violence leads to violence, and so does support for violence.
Chabad, which hosted the Hanukkah celebration in Sydney, has always leaned toward a more open door policy with less apparent security than other Jewish institutions. But one of the reasons it has been so effective at outreach has also made it an easy target.
As a result of the Bondi shooting, Chabad will likely increase security, as will synagogues around the world. Jewish institutions will think hard about publicly advertising their events. Law enforcement and public officials will, thankfully, step up protection, at least for a while. These are all the predictable result of an attack that, given the unchecked antisemitic rhetoric and weak responses to previous antisemitic incidents, was all but inevitable.
It’s not inevitable that Australian Jews would now move to Israel, no more than it would have been for Pittsburgh’s Jewish community to uproot itself and move to Tel Aviv after the 2018 Tree of Life massacre. That didn’t happen, because ultimately the risk still doesn’t justify it.
But these shootings, and the constant drip of violent rhetoric, vandalism and confrontation raise a question: If you want to kill Jews in Israel, and you kill them outside Israel, where, exactly, are we supposed to go?
The post Australia shooting terrifies Jews worldwide — and strengthens the case for Israel appeared first on The Forward.
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These are the victims of the Bondi Beach Hanukkah celebration shooting in Sydney
(JTA) — A local rabbi, a Holocaust survivor and a 12-year-old girl are among those killed during the shooting attack Sunday on a Hanukkah celebration in Sydney, Australia.
Here’s what we know about the 11 people murdered in the attack, which took place at a popular beachside playground where more than 1,000 people had congregated to celebrate the first night of the holiday, as well as about those injured.
This story will be updated.
Eli Schlanger, rabbi and father of five
Schlanger was the Chabad emissary in charge of Chabad of Bondi, which had organized the event. He had grown up in England but moved to Sydney 18 years ago, where he was raising his five children with his wife Chaya. Their youngest was born just two months ago.
In addition to leading community events through Chabad of Bondi, Schlanger worked with Jewish prisoners in Australian prisons. “He flew all around the state, to go visit different people in jail, literally at his own expense,” Mendy Litzman, a Sydney Jew who responded as a medic to the attack, told the Jewish Telegraphic Agency.
Last year, amid a surge in antisemitic incidents in Australia, Schlanger posted a video of himself dancing and celebrating Hanukkah, promoting lighting menorahs as “the best response to antisemitism.”
The best response to antisemitism. Happy Chanukah! pic.twitter.com/33RSGYzhUY
— Rabbi Eli Schlanger (@SchlangerEli) December 17, 2024
Two months before his murder, he published an open letter to Australian Prime Minister Anthony Albanese urging him to rescind his “act of betrayal” of the Jewish people. The letter was published on Facebook the same day, Sept. 21, that Albanese announced he would unilaterally recognize an independent Palestinian state.
Alex Kleytman, Holocaust survivor originally from Ukraine
Kleytman had come to the Bondi Beach Hanukkah celebration annually for years, his wife Larisa told The Australian. She said he was protecting her when he was shot. The couple, married for six decades, has two children and 11 grandchildren.
The Australia reported that Kleytman was a Holocaust survivor who had passed World War II living with his family in Siberia.
12-year-old girl
Alex Ryvchin, co-CEO of the Executive Council of Australian Jewry, told CNN that a friend “lost his 12-year-old daughter, who succumbed to her wounds in hospital.” The girl’s name was not immediately released.
Dozens of people were injured
- Yossi Lazaroff, the Chabad rabbi at Texas A&M University, said his son had been shot while running the event for Chabad of Bondi. “Please say Psalms 20 & 21 for my son, Rabbi Leibel Lazaroff, יהודה לייב בן מאניא who was shot in a terrorist attack at a Chanukah event he was running for Chabad of Bondi in Sydney, Australia,” he tweeted.
- Yaakov “Yanky” Super, 24, was on duty for Hatzalah at the event when he was shot in the back, Litzman said. “He started screaming on his radio that he needs back up, he was shot. I heard it and I responded to the scene. I was the closest backup. I was one of the first medical people on the scene,” Litzman said. He added, “We just went into action and saved a lot of lives, including one of our own.”
The post These are the victims of the Bondi Beach Hanukkah celebration shooting in Sydney appeared first on The Forward.
