The nuclear non-proliferation treaty is best described as a. a treaty signed by 190 countries whose goal is to limit the spread of nuclear weapons b. a treaty signed by five countries after world war ii pledging not to use nuclear weapons c. a treaty signed by the us and soviet union to freeze the number of ballistic missiles d. a treaty signed by the us and north korea to reduce the number of nuclear warheads

The correct answer is A.

The Nuclear Non-Proliferation Treaty (NPT) is an international treaty signed to prevent the spread of nuclear weapons and weapons technology. Its goal is also to promote cooperation between member states in the peaceful use of nuclear energy and to encourage nuclear disarmament.

The Treaty entered into force in 1970 and it was extended indefinitely in 1995. A total of 191 states joined the Treaty so far, including the five nuclear-weapon states. Four UN member states never accepted the Treaty and three of them have nuclear weapons: India, Israel and Pakistan.

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