Jimmy Carter led an Olympics boycott in protest of the Soviet invasion of Afghanistan.
The end of his presidential tenure was marked by the 1979 -- 1981 Iran hostage crisis , the 1979 energy crisis , the Three Mile Island nuclear accident , and the Soviet invasion of Afghanistan .	Iran hostage crisis	Iran hostage crisis	1979 energy crisis	1979 energy crisis	Three Mile Island nuclear accident	Three Mile Island accident	Soviet invasion of Afghanistan	Soviet war in Afghanistan
In response to the invasion , Carter ended dtente , escalated the Cold War , and led the international boycott of the 1980 Summer Olympics in Moscow .	dtente	dtente	Cold War	Cold War	international boycott of the 1980 Summer Olympics	1980 Summer Olympics boycott	Moscow	Moscow
