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
Idi Amin Wilson Oryema and Charles Oboth Ofumbi. Amin recruited his followers from his own ethnic group, the Kakwas, along with South Sudanese. By 1977, these three groups formed 60 percent of the 22 top generals and 75 percent of the cabinet. Similarly, Muslims formed 80 percent and 87.5 percent of these groups even though they were only 5 percent of the population. This helps explain why Amin survived eight attempted coups. The army grew from 10,000 to 25,000 by 1978. Amin's army was largely a mercenary force. Half the soldiers were South Sudanese and 26 percent Congolese, with only 24 percent