An Egyptian-led proposal for a nuclear arms free Middle East receives support from the United States, Russia, Britain, France, and China. Israel is the only Middle Eastern nation believed to possess nuclear weapons.
Russian President Vladimir Putin signs a bill extending the New START nuclear arms reduction treaty with the United States until 2026, ahead of its expiration date next week, following talks with U.S. President Joe Biden.
The Treaty on the Prohibition of Nuclear Weapons enters into force, banning the development, testing, production, stockpiling, stationing, transfer, use and threat of use of nuclear weapons in 51 countries. However, the world's major nuclear powers have not endorsed this international agreement.
Both sign a joint statement that North Korea will work towards "complete denuclearisation of the Korean Peninsula", and the U.S. will provide "security guarantees". The two sides agree to recovering and repatriating the remains of prisoners of war and those missing in action.
Iran invites 60 countries to a two-day nuclear disarmament conference in Tehran on April 17–18, entitled "Nuclear energy for everyone, nuclear arms for no one". China says it will attend the conference which invites "the world to disarm and prevent proliferation".