The Treaty on the Prohibition of Nuclear Weapons (TPNW) includes a comprehensive set of prohibitions on participating in any nuclear weapon activities. These include undertakings not to develop, test, produce, acquire, possess, stockpile, use or threaten to use nuclear weapons. The Treaty also prohibits the deployment of nuclear weapons on national territory and the provision of assistance to any State in the conduct of prohibited activities. States parties will be obliged to prevent and suppress any activity prohibited under the TPNW undertaken by persons or on territory under its jurisdiction or control. The Treaty also obliges States parties to provide adequate assistance to individuals affected by the use or testing of nuclear weapons, as well as to take necessary and appropriate measure of environmental remediation in areas under its jurisdiction or control contaminated as a result of activities related to the testing or use of nuclear weapons.
The Treaty on the Prohibition of Nuclear Weapons was adopted by the Conference (by a vote of 122 States in favour ( with one vote against and one abstention) at the United Nations on 7 July 2017, and opened for signature by the Secretary-General of the United Nations on 20 September 2017. It will enter into force 90 days after the fiftieth instrument of ratification, acceptance, approval or accession has been deposited.