The pivotal international agreement that played a significant role in regulation during the Cold War was the Nuclear Non-Proliferation Treaty (NPT) of 1968. The NPT aimed to prevent the spread of nuclear weapons and promote nuclear disarmament while encouraging peaceful uses of nuclear energy. By establishing a framework for cooperation among nuclear and non-nuclear states, the treaty sought to address the fears surrounding nuclear proliferation during the Cold War, a period characterized by heightened tensions between the United States and the Soviet Union. The NPT remains significant today, as it laid the groundwork for ongoing negotiations and efforts toward nuclear disarmament and nonproliferation globally.