A Timeline of Nuclear Disarmament

A Timeline of Nuclear Disarmament
Mike Fisher / AFP / Getty Images

Breakthrough
In 1991, President George H.W. Bush and Gorbachev signed START I, a treaty that set a goal for the two superpowers to cut their nuclear arsenals by a third. Gorbachev hailed the agreement as a "moral achievement" that replaced "military thinking" with "normal human thinking."

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