Global Disarmament Efforts: UN’s Role and Challenges

Few goals in international politics sound as universally agreed upon yet remain as stubbornly out of reach as disarmament. Almost every government claims to want a world with fewer weapons, especially fewer weapons of mass destruction. Yet global military spending keeps climbing, nuclear arsenals persist, and new categories of weapons keep emerging. At the centre of the effort to bridge this gap sits the United Nations, which has spent its entire existence trying to reduce and regulate the world’s arsenals through patient, multilateral negotiation. Understanding how this machinery works, what it has achieved, and why it so often stalls is essential to grasping one of the hardest problems in the management of international relations.

What disarmament actually means 🔗

Disarmament refers to the reduction or complete elimination of armaments, usually achieved through binding international agreements. It is often discussed alongside a related but distinct idea: arms control, which seeks to limit, regulate, or cap weapons rather than abolish them outright. Both share a common purpose, which is to lower the risk of war and reduce the destruction that follows when conflict does occur.

The weapons of greatest concern are the so-called weapons of mass destruction, a category covering nuclear, biological, and chemical arms. The UN has consistently treated the elimination of nuclear weapons, the destruction of chemical weapons, and the strengthening of the prohibition on biological weapons as its highest priorities because these arms pose the gravest threats to human survival. Beyond these, the international community also works to control conventional weapons, small arms, landmines, and cluster munitions, which cause the vast majority of actual casualties in ongoing conflicts.

Why the United Nations took up disarmament 🔗

The connection between the UN and disarmament is not incidental; it is foundational. The very first resolution adopted by the UN General Assembly in January 1946 dealt with the problems raised by the discovery of atomic energy and established a commission to make proposals for controlling atomic energy so that it would be used only for peaceful purposes. This happened just months after the bombings of Hiroshima and Nagasaki had demonstrated the destructive power of the new technology.

The UN Charter itself gives the organisation a clear mandate here. It empowers the General Assembly to consider principles governing disarmament and to make recommendations to member states and the Security Council, while the Security Council is tasked with formulating plans for the regulation of armaments. As Britannica notes, although the goal has proved elusive, the UN has successfully facilitated the negotiation of several major multilateral arms control treaties over the decades.

The treaties that built the disarmament framework 🔗

Over the years the UN has helped develop a comprehensive legal framework consisting of dozens of international treaties addressing weapons ranging from nuclear bombs to landmines. A handful of these stand out as cornerstones.

The Partial Test-Ban Treaty 🔗

Signed in 1963, the Partial Test-Ban Treaty (also called the Limited Test Ban Treaty) prohibited nuclear weapon test explosions in the atmosphere, in outer space, and under water. It was an early breakthrough, born partly out of public anxiety over radioactive fallout. Its main limitation was that it permitted underground testing to continue, which meant it slowed the visible signs of the arms race without ending it.

The Non-Proliferation Treaty 🔗

The Treaty on the Non-Proliferation of Nuclear Weapons (NPT), approved by the General Assembly in 1968, is widely regarded as the cornerstone of the global non-proliferation regime. The treaty rests on three pillars: preventing the spread of nuclear weapons, promoting cooperation in the peaceful use of nuclear energy, and committing the nuclear powers to pursue disarmament. As the UN explains, the NPT both works to prevent proliferation and fosters cooperation in peaceful nuclear technology. A persistent criticism, however, is that it divides the world into recognised nuclear-weapon states and everyone else, which many countries view as discriminatory.

The biological and chemical weapons conventions 🔗

The Biological Weapons Convention of 1972 holds a special place in history as the first multilateral disarmament treaty to ban an entire category of weapons outright. It was followed by the Chemical Weapons Convention of 1993, which prohibits the development, production, stockpiling, and use of chemical weapons and includes a strong verification mechanism. Together these conventions show that complete prohibition of a weapons class is genuinely achievable, not merely aspirational.

The Comprehensive Test-Ban Treaty and the prohibition treaty 🔗

The Comprehensive Nuclear-Test-Ban Treaty (CTBT) of 1996 sought to ban all nuclear explosions everywhere, but it has not yet formally entered into force because it requires ratification by a specific list of technically capable states. More recently, the Treaty on the Prohibition of Nuclear Weapons entered into force in 2021, establishing the first legal framework specifically aimed at eliminating nuclear weapons and marking the first international commitment on nuclear disarmament in fifteen years.

The UN bodies that drive disarmament 🔗

Treaties do not negotiate themselves. A network of specialised institutions supports the entire process, providing expertise, secretariat services, and a permanent forum for dialogue.

The Office for Disarmament Affairs 🔗

The UN Office for Disarmament Affairs (UNODA) is the principal body coordinating the organisation’s work in this field. It was established in 2007 as a successor to the earlier Department for Disarmament Affairs, and it provides support to the various disarmament bodies while promoting disarmament efforts globally. UNODA has also published the United Nations Disarmament Yearbook continuously since 1946, making it an invaluable record of the field.

The Conference on Disarmament 🔗

The Conference on Disarmament (CD) is the single multilateral disarmament negotiating forum of the international community. It was recognised in 1978 at the General Assembly’s first Special Session on Disarmament and was established in its present form in 1979, succeeding a series of earlier Geneva-based negotiating committees. Based in Geneva, it brings together 65 member states, including all five permanent members of the Security Council, and it negotiated landmark agreements such as the NPT, the Biological and Chemical Weapons Conventions, and the CTBT.

The CD has a curious institutional character. Although it was established by the General Assembly and is funded through the UN budget, it functions as an independent entity with its own rules of procedure, and it submits an annual report on its work to the General Assembly. One of its defining features is that it operates by consensus, which means any single member can block progress. This rule is the main reason the CD has struggled to conclude a major new treaty for many years, even as global security challenges multiply.

The persistent problem of military spending 🔗

For all the diplomatic effort poured into disarmament, the numbers tell a sobering story. According to the Stockholm International Peace Research Institute, world military expenditure reached a record $2,718 billion in 2024, an increase of 9.4 per cent over the previous year and the steepest annual rise since the end of the Cold War. Spending rose in all five geographical regions of the world for the second consecutive year.

The scale becomes even starker when broken down. SIPRI reports that the top five spenders, namely the United States, China, Russia, Germany, and India, together accounted for 60 per cent of the global total. Over the decade from 2015 to 2024, world military spending climbed by 37 per cent, pushing the global military burden up to 2.5 per cent of world GDP and per-person spending to its highest level since 1990. These figures highlight the central paradox of disarmament: while the legal architecture against weapons expands, the resources devoted to acquiring them keep growing.

This is why many disarmament advocates frame the issue in terms of human security, arguing that money spent on arms is money diverted from health, education, and development. The case for disarmament is increasingly tied to the broader goal of redirecting resources toward peace-building and meeting human needs.

India’s distinctive position 🔗

India’s approach to disarmament deserves particular attention because it reflects a principled but complex stance. India has long championed the cause of complete, universal nuclear disarmament, yet it has refused to join the NPT, which it views as discriminatory because the treaty divides the world into nuclear haves and have-nots. India’s position is that there is no question of it joining the NPT as a non-nuclear-weapon state, since nuclear weapons remain an integral part of its national security pending global and non-discriminatory disarmament.

India has also stayed outside the CTBT, arguing for a verifiable and time-bound path to total elimination rather than what it sees as a selective freeze. At the same time, India maintains a voluntary moratorium on nuclear testing and follows a doctrine of credible minimum deterrence with a declared no-first-use posture. As the Centre for International Governance Innovation observes, although India is not bound by the NPT’s disarmament obligations, its declared commitment to disarmament reflects its recognition of the global norm against retaining nuclear weapons indefinitely. This dual identity, as both a nuclear-armed state and a vocal advocate of disarmament, captures the tensions running through the entire field.

Why disarmament remains so difficult 🔗

Several recurring obstacles explain why progress is so slow. The first is the security dilemma: states are reluctant to give up weapons when potential rivals retain theirs, so disarmament becomes a problem of mutual trust. The second is verification, since any agreement is only as good as the ability to confirm that all parties are complying. The third is the consensus-based decision-making in bodies like the Conference on Disarmament, which allows even a single state to stall negotiations. Finally, there is the simple fact that some governments will always choose to stay outside agreements that constrain their military interests.

Interestingly, the historical record suggests that treaties framed around universal humanitarian concerns, such as the bans on landmines and cluster munitions, have often proved more successful in concrete terms than partial treaties shaped by the interests of dominant military powers. This points toward a possible path forward, one that emphasises the human cost of weapons rather than narrow strategic calculations.

The road ahead 🔗

The future of disarmament depends on sustained multilateral dialogue and continuous policy development. New challenges are already reshaping the agenda, including questions about lethal autonomous weapons systems, the militarisation of outer space, and the security of cyberspace. These emerging issues mean the disarmament machinery cannot simply maintain the status quo; it must adapt to technologies that did not exist when the foundational treaties were written. The core lesson of nearly eight decades of UN effort is that disarmament is not a single event but an ongoing process, requiring patience, trust-building, and a willingness to keep negotiating even when results come slowly.

What do you think? Should countries like India sign existing treaties such as the NPT and CTBT to strengthen the global regime, or are these agreements genuinely too discriminatory to support without reform? And given that military spending keeps rising despite decades of disarmament treaties, what would it actually take to reverse that trend?

References

1. https://www.un.org/en/global-issues/disarmament
2. https://www.britannica.com/topic/United-Nations/Arms-control-and-disarmament
3. https://www.un.org/en/peaceandsecurity/disarmament-numbers
4. https://www.ungeneva.org/en/about/topics/disarmament
5. https://research.un.org/en/docs/disarmament
6. https://disarmament.unoda.org/en/our-work/disarmament-bodies/conference-disarmament
7. https://en.wikipedia.org/wiki/Conference_on_Disarmament
8. https://www.sipri.org/media/press-release/2025/unprecedented-rise-global-military-expenditure-european-and-middle-east-spending-surges
9. https://www.sipri.org/publications/2025/sipri-fact-sheets/trends-world-military-expenditure-2024
10. https://pmindiaun.gov.in/Cdgeneva/statement_content/MjA3
11. https://www.cigionline.org/articles/india-and-disarmament-obligations-nuclear-weapon-states/
12. https://www.un.org/en/chronicle/article/united-nations-and-disarmament-treaties