Overview
The U.N. Treaty
on the Prohibition of Nuclear Weapons
On 7 July 2017 – following a decade of advocacy by ICAN and its partners – an overwhelming majority of the world’s nations adopted a landmark global agreement to ban nuclear weapons, known officially as the Treaty on the Prohibition of Nuclear Weapons. It will enter into legal force once 50 nations have signed and ratified it.
Prior to the treaty’s adoption, nuclear weapons were the only weapons of mass destruction not subject to a comprehensive ban, despite their catastrophic, widespread and persistent humanitarian and environmental consequences. The new agreement fills a significant gap in international law.
It prohibits nations from developing, testing, producing, manufacturing, transferring, possessing, stockpiling, using or threatening to use nuclear weapons, or allowing nuclear weapons to be stationed on their territory. It also prohibits them from assisting, encouraging or inducing anyone to engage in any of these activities.
Why a ban?
A nation that possesses nuclear weapons may join the treaty, so long as it agrees to destroy them in accordance with a legally binding, time-bound plan. Similarly, a nation that hosts another nation’s nuclear weapons on its territory may join, so long as it agrees to remove them by a specified deadline.Nations are obliged to provide assistance to all victims of the use and testing of nuclear weapons and to take measures for the remediation of contaminated environments. The preamble acknowledges the harm suffered as a result of nuclear weapons, including the disproportionate impact on women and girls, and on indigenous peoples around the world.
The treaty was negotiated at the United Nations headquarters in New York in March, June and July 2017, with the participation of more than 135 nations, as well as members of civil society. It opened for signature on 20 September 2017. It is permanent in nature and will be legally binding on those nations that join it.
Nuclear weapons are the most inhumane and indiscriminate weapons ever created. That is why it is time to end them, before they end us.
Nuclear weapons are the most inhumane and indiscriminate weapons ever created. They have catastrophic humanitarian and environmental consequences that span decades and cross generations; they breed fear and mistrust among nations, as some governments can threaten to wipe out entire cities in a heartbeat; the high cost of their production, maintenance and modernisation diverts public funds from health care, education, disaster relief and other vital services. Banning these immoral, inhumane weapons under international law was a critical step along the path to ending them.
With the adoption of the UN Treaty on the Prohibition of Nuclear Weapons (TPNW) on July 7th, 2017, the world's majority took a critical step towards making that nuclear-weapon-free future a reality.