On January 2, 1980, in a strong reaction to the December 1979 Soviet invasion of Afghanistan, President Jimmy Carter asks the Senate to postpone action on the SALT II nuclear weapons treaty and recalls the U.S. ambassador to Moscow. These actions sent a message that the age of detente and the friendlier diplomatic and economic relations that were established between the United States and Soviet Union during President Richard Nixon’s administration (1969-74) had ended.