While this is an example of international cooperation in the face of mutually-assured destruction, there is some historical context that shows why this is effective, in my opinion: First, because the destructive power of nuclear weapons was already realized by Hiroshima and Nagasaki. Second, because the US no longer had a monopoly on nuclear weapons and determined that overcoming the USSR by force was no longer an option. Third, because the world was still recovering from the Second World War and shared a universal desire for peaceful resolutions.
While this is an example of international cooperation in the face of mutually-assured destruction, there is some historical context that shows why this is effective, in my opinion: First, because the destructive power of nuclear weapons was already realized by Hiroshima and Nagasaki. Second, because the US no longer had a monopoly on nuclear weapons and determined that overcoming the USSR by force was no longer an option. Third, because the world was still recovering from the Second World War and shared a universal desire for peaceful resolutions.