Nuclear Ban Monitor

About the TPNW
About the TPNW

The TPNW was adopted on 7 July 2017 at a diplomatic conference established by the UN General Assembly. A total of 122 states, more than three-fifths of the world’s 197 states, voted in favour of the Treaty’s adoption.
The history of the TPNW

The Core Prohibitions

The Definition of Nuclear Weapons

Safeguards and Verification under the TPNW

National Implementation Obligations

Relationship with other agreements

The Text of the Treaty
TPNW Status
TPNW Status

Two years after the TPNW was opened for signature, the Ban Monitor identifies a total of 135 states, or more than two thirds of the world’s states, as “TPNW supporters”.
Two Year status

Support by Region

Adherence Speed
TPNW Compliance
TPNW Compliance

The Ban Monitor evaluates the degree to which the world’s 197 states – adherents and non-adherents alike – act in accordance with the treaty’s core prohibitions.
TPNW Compliance status

Compliance by prohibition

Compliance by region

Interpretations and Analysis
State Profiles
Nuclear Weapons
Nuclear Weapons

A nuclear weapon is a nuclear explosive device that has been weaponised, meaning that it is contained in and delivered by, for example, a missile, rocket, or bomb.
Nuclear arsenals

Extended nuclear deterrence

Host states

War Games and Missile Tests

Policies on Use

Tracking progress towards a world free of nuclear weapons

Latest news

Nuclear Weapons Ban Monitor 2019 is here

The 2019 report of the Nuclear Weapons Ban Monitor was launched at a side event during the UN General Assembly in New York on 16 October.

Sobering study on consequences of India-Pakistan nuclear-war

A new study by Brian Toon, Alan Robock and others, published early October 2019 in Science Advances, provides sobering insight into the consequences of a potential nuclear war between India and Pakistan.

Setting the deadline for nuclear weapon destruction under the TPNW

The First Meeting of States Parties to the TPNW will be obligated to set the deadlines for the destruction of a state party’s nuclear weapons and for the removal of a foreign state’s nuclear weapons (hosting arrangements).