He was arrested by Soviet occupation authorities at the conclusion of the war and whisked off to exile somewhere in the Soviet Union. Press reports now indicate that the Soviet officer who ordered the arrest of Wallenberg was none other than Leonid Brezhnev. We have yet to learn why Wallenberg was taken prisoner but there is reason to believe that it was because he told the Soviet authorities that his rescue work was done at the behest of President Franklin Roosevelt and the U.S. War Refugee Board. For whatever reasons. Wallenberg vanished into the Soviet gulag and has only been seen on a handful of occasions since.