International Day for the Total Elimination of Nuclear Weapons

This Day provides an occasion for the world community to reaffirm its commitment to global nuclear disarmament as a priority. It provides an opportunity to educate the public - and their leaders - about the real benefits of eliminating such weapons, and the social and economic costs of perpetuating them. Commemorating this Day at the United Nations is especially important, given its universal membership and its long experience in grappling with nuclear disarmament issues. It is the right place to address one of humanity's greatest challenges; achieving the peace and security of a world without nuclear weapons.

Watch the (Continued) High-level Meeting on International Day for the Total Elimination of Nuclear Weapons - General Assembly, 79th session!

Achieving global nuclear disarmament is the highest disarmament priority of the United Nations. It was the subject of the General Assembly's first resolution in 1946, which established the Atomic Energy Commission (dissolved in 1952), with a mandate to make specific proposals for the control of nuclear energy and the elimination of atomic weapons and all other major weapons adaptable to mass destruction.

Watch the High-level Meeting on International Day for the Total Elimination of Nuclear Weapons - General Assembly, 79th session!

The UNODA provides substantive support in the area of the disarmament of weapons of mass destruction (nuclear, chemical and biological weapons). It supports and participates in multilateral efforts to strengthen the non-proliferation of WMD and in this connection cooperates with the relevant intergovernmental organizations and specialized agencies of the United Nations system, in particular the IAEA, the OPCW and the CTBTO PrepCom, in addition to supporting relevant multilateral treaties such as the Nuclear Non-Proliferation Treaty and the Biological Weapons Convention.

Despite progress in reducing nuclear weapon arsenals since the Cold War, the world’s combined inventory of nuclear warheads remains at a very high level: nine countries possessed roughly 12,700 warheads as of early-2022.

Approximately 90 percent of all nuclear warheads are owned by Russia and the United States, who each have around 4,000 warheads in their military stockpiles; no other nuclear-armed state sees a need for more than a few hundred nuclear weapons for national security.

Globally, the overall inventory of nuclear weapons is declining, but the pace of reductions is slowing compared with the past 30 years. Moreover, these reductions are happening only because the United States and Russia are still dismantling previously retired warheads.

In contrast to the overall inventory of nuclear weapons, the number of warheads in global military stockpiles––which comprises warheads assigned to operational forces––is increasing once again. The United States is still reducing its nuclear stockpile slowly. France and Israel have relatively stable inventories. But China, India, North Korea, Pakistan and the United Kingdom, as well as possibly Russia, are all thought to be increasing their stockpiles.

The exact number of nuclear weapons in each country’s possession is a closely held national secret, so the estimates presented here come with significant uncertainty. Most nuclear-armed states provide essentially no information about the sizes of their nuclear stockpiles. Yet the degree of secrecy varies considerably from country to country. Between 2010 and 2018, the United disclosed its total stockpile size, but in 2019 the Trump administration stopped that practice. Fortunately, in 2020, the Biden administration restored nuclear transparency – a victory for nuclear accountability in a democratic country. Despite limitations, however, publicly available information, careful analysis of historical records, and occasional leaks make it possible to make best estimates about the size and composition of the national nuclear weapon stockpiles. For a breakdown of the nuclear warhead categories of the different nuclear-armed states, and for links to more details overviews of each country’s arsenals, see this table:

In historical context, the number of nuclear weapons in the world has declined significantly since the Cold War: down from a peak of approximately 70,300 in 1986 to an estimated 12,700 in early-2022. Government officials often characterize that accomplishment as a result of current or recent arms control agreements, but in reality the overwhelming portion of the reduction happened in the 1990s. Some also compare today’s numbers with those of the 1950s, but that is like comparing apples and oranges; today’s forces are vastly more capable.

The pace of reduction has slowed significantly compared with the 1990s and appears to continue only because of dismantlement of retired weapons; the trend is that the military stockpiles (useable nuclear weapons) are increasing again.

Of the world’s 12,700 nuclear warheads, more than 9,400 are in the military stockpiles  for use by missiles, aircraft, ships and submarines.  The remaining warheads have been retired but are still relatively intact and are awaiting dismantlement). Of the 9,440 warheads in the military stockpiles, some 3,730 are deployed with operational forces (on missiles or bomber bases). Of those, approximately 2,000 US, Russian, British and French warheads are on high alert, ready for use on short notice (see table):

"The Treaty on the Non-Proliferation of Nuclear Weapons (NPT) is a landmark international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote co-operation in the peaceful uses of nuclear energy and to further the goal of achieving nuclear disarmament and general and complete disarmament. The NPT represents the only binding commitment in a multilateral treaty to the goal of disarmament by the nuclear-weapon States.

Opened for signature in 1968, the Treaty entered into force in 1970. Since its entry into force, the NPT has been the cornerstone of global nuclear non-proliferation regime. 191 States parties have joined the Treaty, including the five nuclear-weapon States, making the NPT the most widely adhered to multilateral disarmament agreement.

The International Day for the Total Elimination of Nuclear Weapons has been observed annually on September 26th since 2014. Pursuant to the resolutions of the General Assembly, Member States, the United Nations system and civil society, including non-governmental organizations, academia, parliamentarians, the mass media and individuals are encouraged to commemorate and promote the International Day through enhancing public awareness and education about the threat posed to humanity by nuclear weapons and the necessity for their total elimination.