The Nixon Doctrine was the foreign policy doctrine of Richard Nixon, the 37th president of the United States from 1969 to 1974. It was put forth during a press conference in Guam on July 25, 1969, by Nixon, and later formalized in his speech on Vietnamization on November 3, 1969.

The Carter Doctrine was a policy proclaimed by President of the United States Jimmy Carter in his State of the Union Address on January 23, 1980, which stated that the United States would use military force, if necessary, to defend its national interests in the Persian Gulf. It was a response to the Soviet Union's intervention in Afghanistan in 1979, and it was intended to deter the Soviet Union, the United States' Cold War adversary, from seeking hegemony in the Persian Gulf region.