may 26, 1972 - The Anti-Ballistic Missile Treaty was signed

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"Nuclear alarms – even alerts – occurred after 1962, but there were no more nuclear crises of this kind that had dominated the superpowers relationship since the late 1940s. Instead a series of Soviet-American agreements began to emerge, at first tacit, alter explicit, acknowledging the danger nuclear weapons posed to the capitalist and communist worlds alike. These include an unwritten understanding that both sides would tolerate satellite reconnaissance, the vindication of another Eisenhower insight, which was that by learning to live with transparency – open skies – the US and the USSR could minimise the possibility of surprise attack....There was also the realization that the time had come, if not for the international control of nuclear weapons, then at least for agreements on how to manage them. (Gaddis 2006, p. 81)

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