(1970) Nuclear Non-Proliferation Treaty goes into effect The Treaty on the Non-Proliferation of Nuclear Weapons (NPT) goes into force as an effort to slow the ever-quickening pace of countries becoming armed with nuclear weapons. It’s feared that without it, there will be upwards of 30 more nations with “The Bomb” within 20 years.The Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the Non-Proliferation Treaty or NPT, is an international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy, and to further the goal of achieving nuclear disarmament and general and complete disarmament. Participation in the Nuclear Non-Proliferation Treaty. Recognized nuclear weapon state ratifiers Recognized nuclear weapon state acceders Other ratifiers Other acceders or succeeders Withdrawn Non-signatory Unrecognized state, abiding by acceders wiki/Treaty_on_the_Non-Proliferation_of_Nuclear_Weapons4.8.d17