Is International Law Prepared for the Militarization of Outer Space?

By Margarita Johnson '26

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Once upon a time, outer space was viewed as a symbol of scientific and human achievement, made possible by vast international cooperation. However, nowadays it has become an arena for military competition. The majority of nations are increasingly investing in anti-satellite weapons and establishing specialized space forces designed to secure strategic advantages well beyond Earth’s atmosphere. Back in the day, international law attempted to preserve peace, but the rapid militarization of outer space raises an intriguing question: is international law truly prepared for a possible space conflict?

The answer should be clear: no. Current international law is outdated, contains legal flaws, and cannot keep pace with rapidly evolving military technologies. The most established 1967 Outer Space Treaty, created for the safe exploration of space, was written in a political and technological era unlike the current one. Geopolitical tensions and advances in military technology today expose that weakness in the international legal framework governing outer space. 

International space law was established in the late 1960s with the signing of the Outer Space Treaty, developed during the Cold War under the authority of the United Nations. (1) The main principles of the treaty are: weapons of mass destruction cannot be placed in orbit or on the Moon, no nation can claim sovereignty over any territory in outer space, and outer space must be used only for peaceful purposes. (2) That is a prime example of a diplomatic achievement because it helped prevent nations from extending nuclear weapons into space. 

Later, additional agreements expanded several aspects of space law, including the Liability Convention, the Registration Convention, and the Moon Agreement. (3) They addressed responsibility for damage caused by space objects, the requirement for each nation to register launched objects, and regulations governing activities on planetary bodies. (4) Together, these agreements sought to create a newer, more cooperative legal framework for outer space activities. 

Despite that, the legal system established in the 20th century is no longer adequate. The Outer Space Treaty only bans weapons of mass destruction, not conventional ones. This flaw increases the danger, as countries continue to develop technologies capable of destroying satellites without violating any agreement. Military satellites serve as critical tools for navigation, surveillance, communication, missile detection, and intelligence gathering. (5) Therefore, modern warfare heavily depends on satellite technology, making space infrastructure a more strategic military target than anything else. With that, it is clear that the militarization of space is not merely hypothetical; it is happening now. 

Russia and China aggressively expanded their space capabilities, increasing competition among world powers to dominate the strategic high ground of space. In 2007, China’s anti-satellite missile test demonstrated a clear ability of its space equipment to destroy satellites in orbit, which creates massive amounts of dangerous debris. (6) Similarly, Russia has tested its anti-satellite technologies, investing in space warfare systems and further escalating global rivalry in this sector of world politics. (7) As a result, the United States established the United States Space Force in 2019 to conduct military operations in space and be better prepared for growing threats and the increasing militarization of space. (8)

In addition to military threats, cyber warfare has introduced new precautions for space safety, as satellites can be hacked and disabled remotely without firing a single missile. (9) Existing treaties do not address how international law can juridically respond to cyberattacks in space. Such worrisome legal uncertainty only increases the risk of conflict escalation because nations may struggle to determine which actions constitute acts of war. 

In the 21st century, private space companies further complicate the situation. Corporations like SpaceX can operate a massive satellite network and contribute to global strategic importance. (10) Recent international conflicts have shown how privately owned satellite systems have supported military communications and intelligence efforts. Yet, international law on outer space security is designed only around state actors, not corporations, who nowadays have capabilities comparable to those of national governments. The increasing privatization of space only raises additional legal questions regarding the regulation of outer space. 

The greatest weakness of international space law is the lack of an effective enforcement mechanism. Even if nations violate the promise of peaceful cooperation, they would still face few legal consequences. Since international law depends on voluntary compliance and diplomatic pressure, in an environment of growing geopolitical competition, countries must prioritize national security over international cooperation. Some scholars argue that current treaties are sufficient to maintain peace in space, citing cooperative efforts such as the International Space Station as evidence that peaceful cooperation is still possible. (11) However, this counterargument overlooks the speedy pace of military and technological advancement. As nations develop increasingly advanced military strategies and anti-satellite capabilities, general treaty principles alone are no longer sufficient to address challenges that existing legal structures were never designed to anticipate.

Waiting for international law to address a major conflict in space could be a dangerous mistake, given that it has already struggled to keep pace with technological innovation. The destruction of satellites could disrupt communication systems, financial networks, navigation systems, and even emergency response infrastructure worldwide. The consequences would affect military operations and, most importantly, civilians worldwide.

International law must evolve before the militarization of space escalates further, with the goal of nations working together to modernize treaties, establish clearer regulations on conventional weapons and cyber warfare, and strengthen enforcement mechanisms. Outer space should be saved for scientific advancement and peaceful exploration rather than becoming the next battlefield. Remember that preserving peace in space is no longer a diplomatic goal; it is a global necessity.

Endnotes

1. Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, Including the Moon and Other Celestial Bodies. January 27, 1967. U.N.T.S. No. I-8843.

2. Ibid.

3. United Nations. “Space Law Treaties and Principles.” Accessed June 23, 2026. https://www.unoosa.org/oosa/en/ourwork/spacelaw/treaties.html.

4. Ibid.

5. Airbus. “Military Space.” Accessed June 23, 2026. https://www.airbus.com/en/products-services/defence/military-space.

6. Secure World Foundation. 2026 Global Counterspace Capabilities Report. 2026. https://www.swfound.org/publications-and-reports/2026-global-counterspace-capabilities-report.

7. Ibid.

8. U.S. Space Force. “U.S. Space Force – Semper Supra.” Accessed June 24, 2026. https://www.spaceforce.com.

9. U.S. Department of Homeland Security. “S&T Advances Foundational Cybersecurity Research for Space Systems to Protect Critical Infrastructure.” June 10, 2026. https://www.dhs.gov/science-and-technology/news/2026/06/10/st-advances-foundational-cybersecurity-research-space-systems-protect-critical-infrastructure.

10. Reed, Rebekah and Chaitanya Gupta. “The New Space Race.” The Belfer Center for Science and International Affairs. May 13, 2026. https://www.belfercenter.org/research-analysis/new-space-race.

11. Khan, Shah Khalid, Nirajan Shiwakoti, Abebe Diro, Alemayehu Molla, Iqbal Gondal, and Matthew Warren. “Space Cybersecurity Challenges, Mitigation Techniques, Anticipated Readiness, and Future Directions.” International Journal of Critical Infrastructure Protection 47 (2024): 100724. https://doi.org/10.1016/j.ijcip.2024.100724.