Idi Amin Soviet Union became Amin's largest arms supplier. East Germany was involved in the General Service Unit and the State Research Bureau, the two agencies that were most notorious for terror. Later during the Ugandan invasion of Tanzania in 1979, East Germany attempted to remove evidence of its involvement with these agencies. In 1973, U.S. Ambassador Thomas Patrick Melady recommended that the United States reduce its presence in Uganda. Melady described Amin's regime as "racist, erratic and unpredictable, brutal, inept, bellicose, irrational, ridiculous, and militaristic". Accordingly, the United States closed its embassy in Kampala. In June 1976, Amin allowed an Air
Hafizullah Amin Hekmatyar, one of the leading anti-communists in Afghanistan. His general untrustworthiness and his unpopularity amongst Afghans made it more difficult for Amin to find new "foreign patrons". Amin's involvement in the death of Adolph Dubs, the American Ambassador to Afghanistan, strained his relations with the United States. He tried to improve relations by reestablishing contact, met with three different American chargé d'affaires, and was interviewed by an American correspondent. But this did not improve Afghanistan's standing in the eyes of the United States Government. After the third meeting with Amin, J. Bruce Amstutz, the American Ambassador to Afghanistan from 1979