Since nuclear weapons testing began on 16 July 1945, nearly 2,000 have taken place. In the early days of nuclear testing little consideration given to its devastating effects on human life, let alone the dangers of nuclear fallout from atmospheric tests. Hindsight and history have shown us the terrifying and tragic effects of nuclear weapons testing, especially when controlled conditions go awry, and in light of the far more powerful and destructive nuclear weapons that exist today.

The human and environmental tragedies that are the result of nuclear testing are compelling reasons for the need to observe the International Day against Nuclear Tests – a day in which educational events, activities and messages aim to capture the world’s attention and underscore the need for unified efforts to prevent further nuclear weapons testing.

The international instrument to put an end to all forms of nuclear testing is the 1996 Comprehensive Nuclear-Test-Ban Treaty (CTBT), unfortunately, this has yet to enter into force.

On 2 December 2009, the 64th session of the United Nations General Assembly declared 29 August the International Day against Nuclear Tests by unanimously adopting resolution 64/35. The resolution calls for increasing awareness and education “about the effects of nuclear weapon test explosions or any other nuclear explosions and the need for their cessation as one of the means of achieving the goal of a nuclear-weapon-free world.” The resolution was initiated by the Republic of Kazakhstan, together with a large number of sponsors and cosponsors with a view to commemorating the closure of the Semipalatinsk Nuclear Test site on 29 August 1991. The Day is meant to galvanize the United Nations, Member States, intergovernmental and non-governmental organizations, academic institutions, youth networks and the media to inform, educate and advocate the necessity of banning nuclear weapon tests as a valuable step towards achieving a safer world.

2010 marked the inaugural commemoration of the International Day against Nuclear Tests. Each year, since then, the day has been observed by coordinating various activities throughout the world, such as symposia, conferences, exhibits, competitions, publications, lectures in academic institutions, media broadcasts and other initiatives. 

Since its establishment, many bilateral and multilateral governmental level developments as well as broad movements in civil society have helped to advance the cause of banning nuclear tests.

Moreover, “convinced that nuclear disarmament and the total elimination of nuclear weapons are the only absolute guarantee against the use or threat of nuclear weapons,” the General Assembly designated 26 September as the “International Day for the Total Elimination of Nuclear Weapons", which is devoted to furthering the objective of the total elimination of nuclear weapons, through the mobilization of international efforts. First proposed in October 2013, the resolution (A/RES/ 68/32) was a follow-up to the high-level meeting on nuclear disarmament held on 26 September 2013 in the UN General Assembly. The International Day for the Total Elimination of Nuclear Weapons was observed for the first time in September 2014. The International Day against Nuclear Tests, together with other events and actions, has fostered a global environment with more optimistic prospects for a world free of nuclear weapons.

As the Secretary-General recognized in his new disarmament agenda “Securing our Common Future” launched on 24 May 2018, the norm against testing is an example of a measure that serves both disarmament and non-proliferation objectives. By constraining the development of advanced new types of nuclear weapons, the Comprehensive Nuclear-Test-Ban Treaty puts a brake on the arms race. It also serves as a powerful normative barrier against potential States that might seek to develop, manufacture and subsequently acquire nuclear weapons in violation of their non-proliferation commitments.

Every effort needs to be made to ensure the entry into force of the CTBT and to preserve its place in the international architecture. In this regard, the Secretary-General appeals to all remaining States whose ratifications are required for the Comprehensive Nuclear-Test-Ban Treaty to enter into force to commit to sign the Treaty at an early date if they have not already done so, and to accelerate the completion of their ratification processes.

It is the hope of the UN that one day all nuclear weapons will be eliminated. Until then, there is a need to observe International Day against Nuclear Tests as we work towards promoting peace and security world-wide. Initiatives such as the International Day against Nuclear Tests are part of the global efforts towards a nuclear-weapon-free world.