Private Actors in Outer Space and Armed Conflict: A Case Study of Starlink's Role in the Russia-Ukraine War

1. Introduction

On February 26, 2022, two days after Russia launched its full-scale invasion of Ukraine, Elon Musk activated Starlink satellite internet service in the country following a direct request from Ukrainian Deputy Prime Minister Mykhailo Fedorov. What began as a humanitarian gesture rapidly evolved into one of the most consequential examples of private commercial infrastructure being used in active armed conflict in modern history. Ukrainian military forces used Starlink terminals to coordinate drone strikes, maintain battlefield communications, and sustain operational command structures that would otherwise have been destroyed by Russian electronic warfare.

Yet the very actor who provided this critical infrastructure also demonstrated an unprecedented ability to limit it. In late 2023, reporting based on Elon Musk's authorized biography by Walter Isaacson revealed that Musk had secretly ordered SpaceX engineers to disable Starlink connectivity near the Crimean Peninsula in September 2022, preventing a Ukrainian submarine drone attack on Russian naval vessels in Sevastopol. This singular event placed a private individual not a state, not a military commander at the center of a decision with direct strategic implications for a war.

This paper analyzes this case through the lens of international law. It asks: What legal framework governs the conduct of private commercial space operators during armed conflict? What obligations and liabilities do such actors carry under existing treaties? And what does the Starlink case reveal about the gaps in contemporary international space law? The analysis proceeds as follows. Section 2 outlines the international legal framework governing outer space, focusing on the key treaties and their provisions regarding private actors. Section 3 presents the Starlink case study in detail. Section 4 provides a legal analysis of the key issues raised, including state responsibility, dual-use technology, and the applicability of International Humanitarian Law. Section 5 discusses implications and the need for regulatory reform. A conclusion follows.

2. The International Legal Framework for Outer Space

2.1 The Outer Space Treaty (1967)

The primary source of international space law is the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, Including the Moon and Other Celestial Bodies, commonly known as the Outer Space Treaty (OST), which entered into force in 1967. As of 2024, it has 114 states parties, including the United States and Russia (United Nations Office for Outer Space Affairs [UNOOSA], 2024). Several provisions of the OST are directly relevant to the Starlink case. Article I establishes that outer space "shall be free for exploration and use by all States" and that such use "shall be for the benefit and in the interests of all countries." Article II prohibits the national appropriation of outer space by claim of sovereignty. Article III requires that all activities in outer space be conducted "in accordance with international law, including the Charter of the United Nations."

Most critically for the present analysis is Article VI, which states that "States Parties to the Treaty shall bear international responsibility for national activities in outer space, whether such activities are carried on by governmental agencies or by non-governmental entities." This provision extends state responsibility to private actors, requiring that "the activities of non-governmental entities in outer space shall require authorization and continuing supervision by the appropriate State Party to the Treaty." Under this framework, SpaceX's activities are legally attributable, at least in part, to the United States.

2.2 The Liability Convention (1972)

The Convention on International Liability for Damage Caused by Space Objects (1972) establishes a regime of absolute liability for damage caused on the surface of the Earth or to aircraft in flight by space objects (Article II), and fault-based liability for damage caused in outer space (Article III). A "launching State" defined as a state that launches or procures the launch of a space object, or from whose territory a launch is conducted bears this liability (Article I).

The Convention was designed in a Cold War context where space activities were exclusively state-run. It does not directly address scenarios in which a private company's deliberate operational decisions such as enabling or disabling coverage cause damage or alter the course of military operations. This gap is central to the Starlink problem.

2.3 The ITU Framework and Spectrum Regulation

The International Telecommunication Union (ITU) regulates the use of radio frequency spectrum and orbital slots. SpaceX has obtained ITU filings for Starlink through the United States, which means that the US bears regulatory responsibility for Starlink's compliance with international spectrum rules. However, the ITU framework is purely technical and does not address the use of satellite communications in armed conflict or the humanitarian and military implications of connectivity decisions.

2.4 The Gap: Private Commercial Actors in Conflict

The treaties described above were negotiated between 1967 and 1979, during a period when space activities were the exclusive domain of state governments. The dramatic commercialization of space in the twenty-first century led by companies such as SpaceX, OneWeb, and Amazon's Project Kuiper has created a regulatory landscape that existing treaties were never designed to address. Private actors now own and operate critical space infrastructure, yet international law continues to frame accountability primarily through the lens of state responsibility (Freeland, 2021).

3. The Starlink Case Study

3.1 Deployment and Military Integration SpaceX activated Starlink in Ukraine on February 26, 2022, initially providing approximately 5,000 terminals. By early 2023, Ukraine was operating over 40,000 Starlink terminals, making it the largest military user of the system in the world (Strout, 2023). The terminals were used for a wide range of applications, including tactical drone operations, artillery targeting through the GIS Arta software platform, command-and-control communications, and intelligence sharing.

The US government subsequently formalized support through contracts between SpaceX and the Department of Defense (DoD) and the United States Agency for International Development (USAID). The Pentagon's Starshield program a classified military variant of Starlink was also developed during this period, further blurring the line between commercial and military space operations.

3.2 The Crimea Incident and Unilateral Decision-Making The most legally significant episode in the Starlink-Ukraine case occurred in September 2022. According to Isaacson (2023), Ukrainian forces planned a submarine drone attack on Russian naval vessels in Sevastopol harbor in Crimea. As the drones approached their targets, Starlink connectivity was cut, causing the drones to wash ashore harmlessly. The decision was made personally by Elon Musk, who feared the attack would provoke a nuclear response from Russia.

Musk subsequently confirmed on his social media platform X that he had refused a Ukrainian request to "activate Starlink all the way to Sevastopol" because doing so would make SpaceX "explicitly complicit in a major act of war." This framing is legally remarkable: it positions a private actor as making independent geopolitical and strategic judgments about the permissible scope of military action in an armed conflict.

3.3 Subsequent Restrictions and Selective Availability

Beyond the Crimea incident, SpaceX has implemented various forms of selective service availability in Ukraine. Coverage was reportedly disabled in areas near the front lines at certain times, and SpaceX placed restrictions on the use of Starlink for offensive drone operations a policy enforced through geofencing technology. These decisions were made by a private company, without formal consultation with the Ukrainian government or any multilateral body (Burgess, 2023).

4. Legal Analysis

4.1 State Responsibility and Article VI OST

Under Article VI of the OST, the United States bears international responsibility for SpaceX's activities as a non-governmental entity authorized to operate in outer space. The question is whether this responsibility extends to SpaceX's operational decisions regarding connectivity in a conflict zone. The International Law Commission's Articles on State Responsibility (2001) provide that a state is responsible for the conduct of persons or entities it authorizes and supervises. If the US government authorized Starlink's deployment in Ukraine and continues to supervise SpaceX's operations, it follows that the US bears at least partial responsibility for the consequences of SpaceX's connectivity decisions.

However, the practical scope of Article VI responsibility is unclear. The treaty requires "authorization and continuing supervision" but does not specify the degree of oversight required, nor does it address the situation where a private actor makes unilateral operational decisions that the authorizing state did not anticipate or control. This ambiguity must be resolved through the development of clearer national space laws and international guidance.

4.2 Dual-Use Technology and International Humanitarian Law

International Humanitarian Law (IHL) the body of rules governing the conduct of armed conflict raises distinct but related issues. IHL applies to the parties to a conflict, but its application to commercial actors providing infrastructure used by belligerents is not settled. The ICRC has acknowledged that civilians and civilian objects providing "direct participation in hostilities" may lose their protection under IHL (ICRC, 2009). If Starlink terminals are used exclusively for offensive military operations, it is arguable that such operations constitute direct participation, potentially making those terminals legitimate military objectives under IHL.

At the same time, Starlink also provides civilian communications, internet access for humanitarian workers, and connectivity for ordinary Ukrainians. This dual-use character complicates any straightforward legal characterization. A legal framework that addresses the dual-use nature of commercial satellite communications is urgently needed.

4.3 The Problem of Private Actor Discretion

Perhaps the most novel legal problem raised by the Starlink case is the existence of private actor discretion over military-critical infrastructure. Musk's decision to restrict coverage near Crimea was not made pursuant to any legal obligation, government order, or international rule. It was a unilateral business judgment. The implications are profound: a single individual controlled infrastructure upon which a sovereign state's military depended, and exercised that control based on personal geopolitical calculations.

This situation has no clear precedent in international law. While states have long used economic leverage and sanctions to influence conflicts, the scenario of a private company unilaterally modulating battlefield communications in real time is genuinely new. Existing legal frameworks OST Article VI, IHL, the Liability Convention were not designed to address it. As Schmitt and Watts (2023) argue, there is a pressing need to determine whether commercial satellite operators can be considered "quasi-belligerents" and what duties this might impose on them.

5. Implications and the Need for Reform

The Starlink case illustrates that international space law is experiencing a structural mismatch: the legal framework was built for a world of state actors, but the operational reality of the twenty-first century involves private companies making decisions with consequences comparable to those of state military commands. Three areas of reform are particularly urgent. First, Article VI of the OST should be supplemented with binding guidelines that specify the degree of state oversight required over private space actors operating in or near conflict zones. States that authorize such actors should be required to ensure those actors comply with IHL principles, and meaningful supervision mechanisms should be established. Second, a multilateral instrument addressing the use of commercial satellite communications in armed conflict should be developed, possibly under the auspices of the UN Committee on the Peaceful Uses of Outer Space (COPUOS). Such an instrument could clarify the legal status of commercial satellite operators, the obligations they bear under IHL, and the conditions under which they may restrict access. Third, national space laws should be updated to include conflict-of-interest provisions and to regulate the operational decisions of commercial operators in conflict zones. The United States, as the authorizing state for Starlink, could take a leading role in developing such provisions.

6. Conclusion

The deployment of Starlink in Ukraine represents a watershed moment in the history of international space law. For the first time, a private commercial satellite network became integrated into the military operations of a state engaged in large-scale armed conflict, and the decisions of a private individual about that network had direct battlefield consequences. The existing international legal framework built on the Outer Space Treaty, the Liability Convention, and the principles of IHL is not equipped to fully address this reality. This paper has argued that while Article VI of the OST extends state responsibility to private space actors, it does not adequately govern the operational decisions those actors make during armed conflict. The dual-use nature of Starlink, the absence of clear IHL guidance for commercial satellite operators, and the unprecedented exercise of private discretion over military-critical infrastructure all point to the same conclusion: international law must evolve to regulate the role of private commercial actors in conflict zones. The Starlink case is not an anomaly. As commercial space infrastructure becomes more pervasive and more deeply integrated into both civilian and military operations, scenarios like this will recur. The international community has an opportunity and an obligation to develop the legal frameworks needed to govern them.