Model UN Background Guide

Committee: Disarmament and International Security Committee (DISEC / GA1)

Topic: Outer-Space Weaponization

Conference Year: 2025

1. Topic Background

Outer space has long been recognized as a domain of strategic importance, scientific exploration, and peaceful cooperation. Since the launch of Sputnik 1 in 1957, space activities have expanded rapidly, encompassing satellite communications, Earth observation, navigation, and scientific research. However, as space technologies have advanced, so too have concerns about the militarization and potential weaponization of outer space.

The weaponization of outer space refers to the placement or development of weapons systems in orbit or other extraterrestrial locations, including anti-satellite (ASAT) weapons, space-based missile defense, and directed-energy weapons. The Cold War era saw the first significant arms race in space, with both the United States and the Soviet Union developing ASAT capabilities. Despite early treaties like the Outer Space Treaty (1967), which prohibits the placement of nuclear weapons or other weapons of mass destruction in orbit, no comprehensive ban exists on conventional weapons or the deployment of space-based weapons systems.

In recent years, renewed geopolitical tensions and rapid technological advances have brought the issue back to the forefront. Countries such as the United States, China, Russia, and India have tested or demonstrated ASAT capabilities, raising fears of an arms race in space. The establishment of dedicated military space commands and the development of space-based missile defense systems have further escalated concerns. Moreover, the increasing reliance on satellites for civilian and military infrastructure makes space a vulnerable domain, where conflict could have devastating global consequences.

The topic is on the DISEC agenda in 2025 due to these growing challenges, the lack of binding international agreements specifically addressing space weaponization, and the need to prevent conflict in this critical domain. The committee is tasked with exploring measures to promote transparency, confidence-building, and potential arms control frameworks to preserve outer space as a peaceful environment.

2. Key Actors

United States: A leading space power with extensive military space capabilities, including satellite constellations for communication, navigation (GPS), and missile warning. The US has conducted ASAT tests and established the United States Space Force (2019) as a separate military branch. It advocates for responsible behavior in space but resists binding limitations that could constrain its strategic advantages.

Russia: Another major space and military power, Russia maintains significant space assets and has tested ASAT weapons. It emphasizes the importance of strategic stability and often calls for legally binding agreements to prevent weaponization but remains wary of proposals perceived as limiting its military options.

China: Rapidly expanding its space capabilities, China has demonstrated ASAT capabilities and has ambitious plans for space exploration and military applications. It supports multilateral arms control but also pursues advanced space technologies, balancing cooperation with strategic competition.

India: An emerging space power with demonstrated ASAT capability (2019 test). India advocates for the peaceful use of outer space but also stresses the need for credible deterrence and national security considerations.

European Union (EU): While not a single space power, the EU collectively promotes the peaceful use of outer space and supports transparency and confidence-building measures. The EU encourages multilateral dialogue and the development of international norms but lacks a unified military space policy.

United Nations Office for Outer Space Affairs (UNOOSA): The UN body responsible for promoting international cooperation in the peaceful use of outer space. UNOOSA facilitates dialogue, develops guidelines, and supports capacity-building but has limited enforcement power.

Other regional powers: Countries such as Japan, South Korea, Brazil, and Israel are increasingly active in space activities and contribute to discussions on space security, often emphasizing peaceful uses and the prevention of weaponization.

3. Bloc Positions

Western Bloc (United States, NATO members, Japan, Australia):
Generally supports maintaining freedom of space operations and opposes the weaponization of space in principle but resists binding treaties that could limit defensive capabilities, particularly missile defense. Emphasizes transparency, responsible behavior, and voluntary norms over legally binding restrictions. Prioritizes technological innovation and strategic advantage.

Russia-China Bloc:
Advocates for legally binding international treaties to ban the weaponization of space, including prohibitions on ASAT weapons and space-based missile defense systems. Calls for verification mechanisms and confidence-building measures. Views space weaponization as a destabilizing factor that threatens global security and strategic stability.

Non-Aligned and Developing Countries:
Generally support the peaceful use of outer space and the prevention of an arms race in space. Many members advocate for stronger international legal frameworks and equitable access to space technologies. Concerned about the militarization of space exacerbating global inequalities and security dilemmas. Often align with calls for disarmament and transparency.

Emerging Space Powers (India, Brazil, South Africa):
Seek a balanced approach that recognizes national security interests while promoting peaceful uses of space. Support dialogue and confidence-building but also assert the right to develop space capabilities, including defensive measures. Emphasize the need for inclusive governance and capacity-building for developing countries.

4. Past UN Action

• Outer Space Treaty (1967): Prohibits the placement of nuclear weapons or other weapons of mass destruction in orbit or on celestial bodies and limits the use of the Moon and other celestial bodies to peaceful purposes.
• UN General Assembly Resolution 37/92 (1982): Calls for the prevention of an arms race in outer space (PAROS).
• UNGA Resolution 68/74 (2013): Calls for strengthening the legal framework for the peaceful use of outer space, including transparency and confidence-building measures.
• UNGA Resolution 75/36 (2020): Addresses the prevention of an arms race in outer space and encourages dialogue among states.
• Conference on Disarmament (CD) PAROS Working Group: Has discussed space security issues but reached no binding agreements due to geopolitical disagreements.
• Group of Governmental Experts (GGE) on Transparency and Confidence-Building Measures (TCBMs) in Outer Space Activities (2019): Produced recommendations to enhance trust and reduce risks in space activities.

5. Questions a Resolution Should Answer

1. What specific definitions and categories of weapons in outer space should be addressed or prohibited?
2. How can verification and compliance mechanisms be established or improved to ensure transparency and trust?
3. What confidence-building measures can be implemented to reduce the risk of misunderstandings or accidental conflict in space?
4. How should dual-use technologies (civilian and military) be managed to prevent weaponization without hindering peaceful uses?
5. What role should existing treaties and international organizations play in enforcing or monitoring space weaponization?
6. How can equitable access to space and space technologies be ensured while preventing militarization?
7. What mechanisms can be proposed to resolve disputes arising from suspected space weaponization activities?

6. Further Reading

UN Documents:
Official UN resolutions, reports from the Office for Outer Space Affairs (UNOOSA), and documents from the Conference on Disarmament provide authoritative insights into international legal frameworks and ongoing diplomatic efforts regarding outer space security. These include General Assembly resolutions, reports of Group of Governmental Experts, and treaty texts such as the Outer Space Treaty.

Think-Tank Reports:
Research papers and policy briefs from institutions specializing in international security, space policy, and arms control (such as the Stockholm International Peace Research Institute, the Center for Strategic and International Studies, and the Secure World Foundation) offer detailed analysis of technological trends, geopolitical dynamics, and proposed arms control measures. These sources help contextualize state behaviors and emerging threats.

News Outlets and Specialized Media:
Reputable international news organizations and specialized space and defense media (e.g., SpaceNews, Defense News, The Diplomat) provide up-to-date reporting on recent ASAT tests, military space developments, and diplomatic negotiations. These sources are valuable for understanding the current political climate and recent incidents influencing the debate on space weaponization.

This background guide aims to equip delegates with a comprehensive understanding of the complex and evolving challenges surrounding the weaponization of outer space, enabling informed and constructive debate in DISEC 2025.