When did the United Nations prohibit other countries from making nuclear weapons?

There is the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) issued by the United Nations, also known as the Treaty on the Non-Proliferation of Nuclear Weapons or the Nuclear Non-Proliferation Treaty. It was an international treaty signed by 59 countries including Britain, the United States and the Soviet Union in London, Washington and Moscow on June 7, 1968. The purpose of the Treaty is to prevent nuclear proliferation, promote nuclear disarmament and promote international cooperation in the peaceful use of nuclear energy. The treaty came into force in March 1970. As of June 2003, the Treaty has 186 States parties. 1959 and 196 1 year, the United Nations General Assembly passed Ireland's bills demanding that nuclear-weapon States not provide nuclear weapons to non-nuclear-weapon States and "preventing the wider proliferation of nuclear weapons". These two bills are the embryonic form of the Treaty on the Non-Proliferation of Nuclear Weapons.

1960 and 1964, France and China successively successfully exploded nuclear devices, and the United States and the Soviet Union were extremely worried that more countries would possess nuclear weapons. 1965 In August, the United States submitted the draft Treaty on the Non-Proliferation of Nuclear Weapons to the Disarmament Commission in Geneva 18. In September of the same year, the Soviet Union also submitted a draft treaty to the General Assembly. In the autumn of 1966, the Soviet Union and the United States began secret negotiations, and on August 24th, 1967, they submitted a joint draft of the Treaty on the Non-Proliferation of Nuclear Weapons to the Disarmament Commission of 18 countries. On March 30th, 1968, the United States and the Soviet Union proposed a joint amendment. On June 1968, the General Assembly approved the draft treaty.

The treaty has a total of 1 1 clauses, the main contents of which are as follows: nuclear countries promise not to transfer nuclear weapons directly or indirectly to non-nuclear countries and not to assist non-nuclear countries in manufacturing nuclear weapons; Non-nuclear States promise not to manufacture nuclear weapons, not to accept the direct or indirect transfer of nuclear weapons by other countries, not to seek or accept assistance in manufacturing nuclear weapons, and not to provide such assistance to other countries; Stop the nuclear arms race and promote nuclear disarmament; Put peaceful nuclear facilities under the international safeguards of the International Atomic Energy Agency and provide technical cooperation in the peaceful use of nuclear energy.

China signed the Additional Protocol. By 2006, 57 countries had signed the Additional Protocol.