Describe the role of nuclear weapons in global affairs.
The existence of nuclear weapons was used as a bargaining chip and threat during global affairs until the fall of the Soviet Union.
The existence of nuclear weapons has been used as a bargaining chip and threat during global affairs exclusively between the U.S. and the Soviet Union.
The existence of nuclear weapons has been used as a bargaining chip and threat during global affairs in the Cold War and beyond.
The existence of nuclear weapons has been used as a threat, but never a bargaining chip, during global affairs.
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