Kurt Waldheim
In 1986, during Bronfman's presidency, the World Jewish Congress accused Austrian President Kurt Waldheim of covering up his past connections to the Nazi party. It was when Waldheim became a candidate for president that the World Jewish Congress first published material showing Waldheim's active duty in the German army during wartime. This evidence was later used to prove that Waldheim must have known about the deportation of Jews to concentration camps, though Waldheim's service as an Austrian in the German army cannot be considered a war crime. Waldheim had served as an intelligence officer in a unit of the army that participated in the transfer of Greek Jews to death camps. The allegations against Waldheim resulted in public embarrassment for the Austrian president.
Soviet Jewry
In 1983, Bronfman suggested that "American Jews should abandon their strongest weapon, the Jackson–Vanik amendment, as a sign of goodwill that challenges the Soviets to respond in kind."
After Mikhail Gorbachev's ascension in 1985, Bronfman's New York Times message began to resonate with the public. In early 1985, Bronfman secured an invitation to the Kremlin and on September 8–11, visited Moscow, becoming the first World Jewish Congress President to be formally received in Moscow by Soviet Officials. Carrying a note from Shimon Peres, Bronfman met with Gorbachev, and initiated talks of a Soviet Jewish airlift. It is said that Peres' note called on the Soviet Union to resume diplomatic relations with Israel.
In a Washington Post profile a few months after the September trip, Bronfman laid out what he thought had been accomplished during his September meetings. He said, "There's going to be a buildup of pressure through the business community. The Russians know the Soviet Jewry issue is tied to trade ... My guess is that over a period of time, five to ten years, some of our goals will be achieved." Author Gal Beckerman says in his When They Come For Us We'll Be Gone, "Bronfman had a business man's understanding of the Soviet Jewish issue. It was all a matter of negotiation, of calculating what the Russians really wanted and leveraging that against emigration."
In March 1987, Bronfman along with fellow delegates of the World Jewish Congress, flew to Moscow once again. Bronfman held three days of discussions with senior Soviet officials. Together, Bronfman and the World Jewish Congress delegates advocated for the freeing of the Jews living under Soviet rule.
On June 25, 1982, Bronfman became the first representative of a Jewish organization to speak before the United Nations. Speaking before the Special Session on Disarmament, Bronfman said, "world peace cannot tolerate the denial of the legitimacy of Israel or any other nation-state ... [and the] charge that Zionism is racism is an abomination."
Bronfman's goals for the visit were threefold. In his book, The Making of a Jew, he explained: First, he called for the release of all so-called Prisoners of Zion, the Jews imprisoned for expressing a desire to emigrate to Israel. Bronfman also wanted freedom for Jews in the Soviet Union to practice their religion. Finally, he called for the freedom for Soviet Jews to learn Hebrew, which was forbidden at the time.
A year later, in 1988, Bronfman returned to Moscow to meet with Soviet Foreign Minister Eduard Shevardnadze. This trip resulted in the Soviets promising to legalize the teaching of Hebrew in the Soviet Union and to establish a Jewish cultural center in Moscow. Bronfman said of this visit, "By their actions, they are indicating that they are eager to get the question of Jewish rights and emigration off the bargaining table. And it is actions, rather than simply words, that count."
On May 5, 1987, Bronfman spoke to the World Jewish Congress saying Waldheim was "part and parcel of the Nazi killing machine". Waldheim subsequently filed a lawsuit against Bronfman, but dropped the suit shortly after due to a lack of evidence in his favor.
According to Joel Bainerman, in 1991 he was appointed to the International Jewish Committee for Inter-religious Consultations to conduct official contacts between the Vatican and the State of Israel
https://en.wikipedia.org/wiki/Edgar_Bronfman_Sr.