The Cold War 1963 to 1980 - Détente - SALT - Iran and Afghanistan

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After the intense brinkmanship of the Cuban Missile Crisis, the Cold War transitioned into a period known as Détente, characterized by a deliberate effort to ease tensions and avoid nuclear catastrophe. This era saw landmark diplomatic achievements, most notably the Strategic Arms Limitation Talks (SALT I and II), which sought to curb the buildup of intercontinental ballistic missiles. The 1975 Helsinki Accords furthered this stability by recognizing post-WWII European borders and promoting human rights, creating a brief window of relative predictability between the superpowers. However, this thaw cooled rapidly toward the end of the 1970s. The 1979 Soviet invasion of Afghanistan effectively killed Détente, leading to a U.S. grain embargo and a boycott of the 1980 Moscow Olympics. Simultaneously, the Iranian Revolution and the subsequent hostage crisis destabilized the Middle East, fundamentally shifting global power dynamics and contributing to a sense of American vulnerability. These compounding crises, alongside a perceived decline in U.S. military prestige, paved the way for the 1980 election of Ronald Reagan, who promised a more assertive, confrontational stance against the Soviet Union, marking the start of what many call the "Second Cold War."

brinkmanship Missile Détente deliberate nuclear diplomatic Strategic Limitation Helsinki human predictability thaw Soviet Afghanistan Détente embargo boycott Moscow Iranian hostage Middle global American military Ronald assertive Second

Answer this question. Which specific events in 1979 acted as the "tipping point" that ended the period of cooperation and led to the more confrontational stance of the Reagan administration?