Max Stern, a Jewish refugee from Nazi Germany, established himself as a successful art dealer in Montreal and went on to revolutionize the Canadian art world. He never spoke of his experiences as a refugee, or mentioned that he and his father had been prominent art dealers in prewar Düsseldorf. Nor did he make public the fact that the Nazis looted his father’s collection. Now, twenty years after his death, researchers are trying to track down 200 paintings the Nazis forced him to sell in 1937, and to return other looted works to their rightful owners as well. A typical story:

The project’s first big break came in January 2005, when the Art Loss Register (ALR) contacted [Clarence] Epstein [the overseer of Stern’s cultural property] about a 19th-century work by Franz Xaver Winterhalter called Girl from the Sabine Mountains. Off the art market for 68 years, the painting of a peasant woman resting languidly by a tree had been consigned to Estates Unlimited, a small Rhode Island auction house, by Maria-Louise Bissonnette, an octogenarian German baroness who lived in Providence. On behalf of the Stern estate, the ALR’s historic-claims department requested the auction house withdraw the painting from the sale, and the Holocaust Claims Processing Office sent Bissonnette a letter asking her to return it to the Stern estate.

The baroness refused, claiming she had inherited the work from her mother, whose second husband, Karl Wilharm, purchased it at the 1937 Lempertz sale. Disputing—or ignoring—the fact that her stepfather was a high-ranking member of Hitler’s storm troopers, she offered his bill of sale as evidence that the work was hers. “Why should I give the painting back,” she asked, “when there is no proof that it was a forced sale?”

In 2003, the Libyan dictator Muammar Gaddafi, spooked by the American display of might in Iraq, decided to destroy or surrender his entire nuclear program. Informed observers have suggested that the deal he made with the U.S. should serve as a model for any agreement with Iran. Robert Joseph provides some useful background:

Gaddafi had convinced himself that Libya would be next on the U.S. target list after Iraq. There was no reason or need to threaten Libya with bombing as Gaddafi was quick to tell almost every visitor that he did not want to be Saddam Hussein. The images of Saddam being pulled from his spider hole . . . played on his mind.

President Bush’s goal was to have Libya serve as an alternative model to Iraq. Instead of war, proliferators would give up their nuclear programs in exchange for relief from economic and political sanctions.

Any outcome that permits Iran to enrich uranium at any level will fail the one standard that President Trump has established: Iran will not be allowed to have a nuclear weapon. Limiting enrichment even to low levels will allow Iran to break out of the agreement at any time, no matter what the agreement says.

Iran is not a normal government that observes the rules of international behavior or fair “dealmaking.” This is a regime that relies on regional terror and brutal repression of its citizens to stay in power. It has a long history of using negotiations to expand its nuclear program. Its negotiating tactics are clear: extend the negotiations as long as possible and meet any concession with more demands.