Wallenberg was arrested by the Red Army on January 7, 1945, probably on suspicion of being a spy for the United States. What happened to him since is not known - the official Russian version is that he died in captivity on July 17, 1947, but a number of testimonies have placed him alive in Siberian or Russian prisons as late as the 1960s.
Raoul Wallenberg was made an Honorary Citizen of the United States in 1981, in Canada in 1985, and in Israel in 1986.
See also: List of Swedish diplomats