What Soviet-American crisis led to great prudence by both in regards to nuclear weapons?

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The Cuban missile crisis was a 13-day political and military standoff between the United States and the Soviet Union in October 1962 over the installation of Soviet nuclear missiles in Cuba. The crisis is widely regarded as the moment when the Cold War reached its closest point to becoming a full-blown nuclear war. The experience of the crisis led both countries to adopt significant prudence and to establish a direct communication link known as the "hotline," designed to provide a direct and immediate communication between the two leaders in times of emergency.

What Soviet-American Crisis Led to Great Prudence by Both in Regards