Arms control: Arms control refers to measures taken by countries to limit the production, deployment, and proliferation of weapons. In the context of nuclear weapons, it aims to reduce their numbers and minimize the risk of conflict.
Nuclear disarmament: Nuclear disarmament is the process of reducing or eliminating a country's stockpile of nuclear weapons. It involves negotiations and agreements between nations to promote global peace and security.
Treaty on the Non-Proliferation of Nuclear Weapons (NPT): The NPT is an international treaty aimed at preventing the spread of nuclear weapons, promoting disarmament, and facilitating peaceful use of nuclear energy. It has been signed by most countries in the world.