Anger was assigned to the trade department, but after the legation received information about an impending Nazi attack on Norway and Denmark, he became involved in relaying intelligence to Stockholm.Anger originated the idea of issuing Swedish provisional passports and special certificates to protect Jews from internment and deportation.[3] He immediately extended Anger's initiative, introducing colorful protective passes (Schutzpasse) and creating "safe houses" throughout the city.Throughout his post-war career, Anger led efforts to learn what happened to Wallenberg, even meeting personally with Soviet General Secretary Mikhail Gorbachev in the 1980s.In 2000, the Russian government finally acknowledged that Wallenberg and his driver died in Soviet custody in 1947, although the exact circumstances of their deaths remain unclear.