Law Commons^™

The Prohibition On Intervention Under International Law And Cyber Operations, Ori Pomson

International Law Studies

Given that cyber technologies have made way for attempts to influence the affairs of other States in novel and unique ways, scholars have turned to the international legal rule which is prima facie most relevant in addressing such meddling; namely, the prohibition on intervention. Moreover, there appears to be quite a wide-ranging consensus in scholarship that the prohibition on intervention applies to a broad range of cyber operations. In contrast to such scholarship, this article argues that, under the lex lata, the prohibition on intervention only applies to acts amounting to a use of force or constituting support for …

The Plea Of Necessity: An Oft Overlooked Response Option To Hostile Cyber Operations, Louise Arimatsu, Michael N. Schmitt

International Law Studies

States are increasingly focused on the measures—cyber or otherwise—that they can take in response to hostile cyber operations. Although cyber operations are usually responded to with acts of “retorsion” (acts that are lawful, although unfriendly), international law recognizes other self-help mechanisms that allow for more robust responses. In the cyber context, most attention has focused on countermeasures and self-defense. Yet, both are subject to various limitations that constrain their availability.

This article examines a further option, the so-called “plea of necessity.” It allows States to respond to a hostile cyber operation when the action taken would otherwise be unlawful but …

Cyber Attribution And State Responsibility, William Banks

International Law Studies

We might expect international law to specifically address cyber attribution requirements due to the significance of attribution in framing the legal responsibility of States and the boundaries of responsive actions by victim States. However, there is little international law of cyber attribution, and what law there is exists largely by implication. Likewise, there is only a murky and highly contested law of State responsibility that theoretically constrains the vast majority of State-sponsored cyberattacks. Because victim States cannot engage in countermeasures unless they attribute a cyberattack to a State, attribution can serve simultaneously to constrain and empower victim States. However, the …

Application Of The Due Diligence Principle To Cyber Operations, Tomohiro Mikanagi

International Law Studies

The discreet use of proxies by States renders it difficult to prove attribution to States under the existing rules of attribution. On the other hand, the due diligence principle, if applicable, does not require attribution but can lead to the invocation of State responsibility for cyber operations emanating from the territory of other States. In the Corfu Channel judgment the ICJ recognized “every State’s obligation not to allow knowingly its territory to be used for acts contrary to the rights of other States,” and UN Member States agreed that existing international law applies to cyber operations. However, the UN Members …

Military Action To Recover Occupied Land: Lawful Self-Defense Or Prohibited Use Of Force? The 2020 Nagorno-Karabakh Conflict Revisited, Tom Ruys, Felipe Rodriguez Silvestre

International Law Studies

In September 2020, heavy fighting erupted between Armenia and Azerbaijan in and around Nagorno-Karabakh, a region of Azerbaijan long controlled by Armenia. After two months of military confrontations, a tripartite ceasefire was concluded, drastically altering the pre-existing territorial status quo.

The "Second Nagorno-Karabakh War" brings to light a fundamental question for international law on the use of force—and one that has received limited attention in legal doctrine. The question is this: when part of a State’s territory is occupied by another State for an extended period of time, can the former still invoke the right of self-defense to justify …

Protection Of Data In Armed Conflict, Robin Geiss, Henning Lahmann

International Law Studies

This article presents a novel way to conceptualize the protection of data in situations of armed conflict. Although the question of the targeting of data through adversarial military cyber operations and its implications for the qualification of such conduct under International Humanitarian Law has been on scholars’ and states’ radar for the last few years, there remain a number of misunderstandings as to how to think about the notion of “data.” Based on a number of fictional scenarios, the article clarifies the pertinent terminology and makes some expedient distinctions between various types of data. It then analyzes how existing international …

Legal Reviews Of War Algorithms, Tobias Vestner, Altea Rossi

International Law Studies

States and scholars recognize legal reviews of weapons, means or methods of warfare as an essential tool to ensure the legality of military applications of artificial intelligence (AI). Yet, are existing practices fit for this task? This article identifies necessary adaptations to current practices. For AI-enabled systems that are used in relation to targeting, legal reviews need to assess the systems’ compliance with additional rules of international law, in particular targeting law under international humanitarian law (IHL). This article discusses the procedural ramifications thereof. The article further finds that AI systems’ predictability problem needs to be addressed by the technical …

Maritime Police Law Of The People’S Republic Of China, Raul (Pete) Pedrozo

International Law Studies

China’s new Maritime Police Law (MPL) purports to regulate the duties of China’s maritime police agencies, including the China Coast Guard, and safeguard China’s sovereignty, security, and rights and interest. The MPL has potentially far-reaching application, as China claims extensive maritime areas off its mainland and in the South China Sea. This expansive application of maritime law enforcement jurisdiction is problematic given that most of China’s maritime claims are inconsistent with international law. To the extent that the MPL purports to assert jurisdiction over foreign flagged vessels in disputed areas or on the high seas, it contravenes international law. Numerous …

Command Accountability For Ai Weapon Systems In The Law Of Armed Conflict, James Kraska

International Law Studies

The use of artificial intelligence (AI) in weapon systems enhances the ability of operational forces to fuse multispectral sensors to understand the warfighting environment, positively identify, track, and select targets, and engage them with the most appropriate effects. The potential for AI to help close the “kill chain” has raised concern that this creates a gap in accountability between the decisions of humans and the acts of machines, with humans no longer accountable for decisions made during armed conflict. This study suggests that there is no gap because the military commander is always directly and individually accountable for the employment …

Israel’S Perspective On Key Legal And Practical Issues Concerning The Application Of International Law To Cyber Operations, Roy Schöndorf

International Law Studies

The speech given by the Israeli Deputy Attorney General (International Law) at the Naval War College’s event on “Disruptive Technologies and International Law” sets out, for the first time, Israel’s position on the application of international law to cyber operations. Consistent with the position taken by the vast majority of States thus far, Israel considers that international law applies to such operations. The speech stresses that questions pertaining to the identification and application of relevant legal rules remain, given the profound differences between the cyber domain and traditional domains of warfare—land, sea, and air. Therefore, in Israel’s view, a cautious …

Armed Conflicts In Outer Space: Which Law Applies?, Frans G. Von Der Dunk

International Law Studies

So far, outer space has merely become involved in terrestrial armed conflicts as part of the supportive infrastructure for military activities. Unfortunately, the risk that this changes is considerably growing, and it can no longer be excluded that (armed) force will become used in outer space, either directed towards Earth or within outer space itself.

This raises serious issues in the legal context, where space law so far has been premised on the hope that armed conflicts in outer space could be avoided whereas the law of armed conflict was not required so far to deal with the use of …

Responding To Hostile Cyber Operations: The “In-Kind” Option, Michael N. Schmitt, Durward E. Johnson

International Law Studies

Facing hostile cyber operations, States are crafting responsive strategies, tactics and rules of engagement. One of the major challenges in doing so is that key aspects of the international law governing cyber responses are vague, unsettled or complex. Not surprisingly, therefore, international law is markedly absent from strategies and operational concepts. Rather, they tend to take on a practical “tit-for-tat” feel as policymakers logically view “in-kind” responses as “fair play.” For them, responding in-kind surely must be lawful notwithstanding any challenges in discerning the precise legal character of the initial hostile cyber operation.

Testing that sense, this article examines the …

The Human Dimension Of Peace And Aggression, Chiara Redaelli

International Law Studies

Since the adoption of the Charter of the United Nations, the current international legal framework has drastically changed. In its traditional understanding, aggression is “the supreme international crime” aimed at protecting sovereignty and the territorial integrity of states. On the other hand, the U.N. Charter endorses an understanding of peace in the negative sense, that is, as mere absence of war. As human rights have gained momentum, they have helped reshape the legal landscape, a phenomenon referred to as the humanization of international law. How do peace and aggression fit within the humanized legal framework? This article will investigate the …

The Interplay Of International Obligations Connected To The Conduct Of Others: Toward A Framework Of Mutual Compliance Among States Engaged In Partnered Warfare, Berenice Boutin

International Law Studies

This article examines international obligations that arise in relation to the conduct of other States, and analyzes how they apply and interact in the context of partnered warfare. It investigates rules of State responsibility relevant to the context of partnered warfare, as well as primary norms that impose obligations connected to the conduct of others. In essence, they consist of obligations not to actively help to or to blindly let others do what a State would not do itself. It is argued that, taken together, these rules form the contour of an overarching framework of mutual compliance among States cooperating …

An Incident In The South China Sea, Rob Mclaughlin

International Law Studies

This article assesses characterization issues under the law of the sea, through the medium of an International Law Studies “maritime situation.” The article begins with a hypothetical scenario concerning an incident between a NATO warship and PRC vessels near Subi Reef and Thitu Island in the South China Sea. The analysis then turns to how we might assess characterization issues under the law of the sea as they apply to this incident. The lenses of analysis employed are: (1) Where, in law of the sea terms, did the incident happen? (2) Who, employing a law of the sea characterization scheme, …

Will Cyber Autonomy Undercut Democratic Accountability?, Ashley Deeks

International Law Studies

In recent years, legislative bodies such as the U.S. Congress and the U.K. Parliament have struggled to maintain a role for themselves in government decisions to conduct military operations against foreign adversaries. Some of these challenges arise from constitutional structures, but they are also due to the changing nature of conflict: a shift away from large-scale kinetic operations and toward smaller-scale operations—including cyber operations—that are less visible and that do not require robust legislative support. These modern operations leave legislatures to engage in ex post and sometimes ineffective efforts to hold their executive branches accountable for international uses of force …

Autonomous Cyber Capabilities Below And Above The Use Of Force Threshold: Balancing Proportionality And The Need For Speed, Peter Margulies

International Law Studies

Protecting the cyber domain requires speedy responses. Mustering that speed will be a task reserved for autonomous cyber agents—software that chooses particular actions without prior human approval. Unfortunately, autonomous agents also suffer from marked deficits, including bias, unintelligibility, and a lack of contextual judgment. Those deficits pose serious challenges for compliance with international law principles such as proportionality.

In the jus ad bellum, jus in bello, and the law of countermeasures, compliance with proportionality reduces harm and the risk of escalation. Autonomous agent flaws will impair their ability to make the fine-grained decisions that proportionality entails. However, a …

Special Rules Of Attribution Of Conduct In International Law, Marko Milanovic

International Law Studies

Are there are any special rules of attribution in international law? Are there, in other words, imputational rules that are not recognized as such in general international law, but are specific to particular branches of international law? This is the first article to systematically analyze the notion of special rules of attribution in international law. In particular, it searches for such rules in international humanitarian law, the law on the use of force, and European human rights law.

The article argues that, to the extent special rules of attribution exist, they are rare and never uncontroversial. In most situations, putative …

Strategic Proportionality: Limitations On The Use Of Force In Modern Armed Conflicts, Noam Lubell, Amichai Cohen

International Law Studies

The nature of modern armed conflicts, combined with traditional interpretations of proportionality, poses serious challenges to the jus ad bellum goal of limiting and controlling wars. In between the jus ad bellum focus on decisions to use force, and the international humanitarian law (IHL) regulation of specific attacks, there is a far-reaching space in which the regulatory role of international law is bereft of much needed clarity. Perhaps the most striking example is in relation to overall casualties of war. If the jus ad bellum is understood as applying to the opening moments of the conflict, then it cannot provide …

The Unlawfulness Of A “Bloody Nose Strike” On North Korea, Kevin Jon Heller

International Law Studies

The United States has reportedly been debating whether to "react to some nuclear or missile test with a targeted strike against a North Korean facility to bloody Pyongyang’s nose and illustrate the high price the regime could pay for its behavior." This article asks a simple question: would such a “bloody nose strike” (BNS) violate the jus ad bellum?

Providing a coherent answer is complicated by the lack of clarity surrounding the United States’ planning. In particular, the U.S. government has not specified what kind of provocation it believes would justify launching a BNS, has not identified precisely what …

Twelve Key Questions On Self-Defense Against Non-State Actors, Terry D. Gill, Kinga Tibori-Szabó

International Law Studies

This article examines the most pertinent questions relating to the applicability of the right of self-defense to attacks conducted by non-State armed groups (NSAGs) acting independently of State control from the territory of one or more States against the territory of another State. These questions are approached from the perspective of legality (does the right of self-defense apply to attacks not mounted by or under the control of a State) and modality (assuming the applicability of self-defense to such attacks; how do the principles of necessity, proportionality and immediacy affect its application)? Starting with an assessment of the place of …

Adverse Cyber Operations: Causality, Attribution, Evidence, And Due Diligence, Hans-Georg Dederer, Tassilo Singer

International Law Studies

Adverse cyber operations against States are on the rise, and so are the legal challenges related to such incidents under public international law. This article will not delve into already intensely debated problems of classification, such as whether adverse cyber operations constitute “armed attacks” or “use of force.” Rather, the article will focus on causality and attribution with special regard to problems of evidence. In particular, the article will elaborate on the applicable standards of proof to be met by the victim State when submitting, or having to submit, evidence to justify self-defense or countermeasures against the State of origin. …

The Legal Fog Of An Illusion: Three Reflections On "Organization" And "Intensity" As Criteria For The Temporal Scope Of The Law Of Non-International Armed Conflict, Jann K. Kleffner

International Law Studies

The "organization" of the non-State armed group and the "intensity" of the violence between it and its opponent(s) have emerged as the two key criteria to determine the temporal scope of the law of non-international armed conflict. These criteria have served to lift the fog of law in some important respects. Yet, several aspects of the temporal scope of the law of non-international armed conflict remain unsettled. This article addresses three of them, namely the assertion that the factors for ascertaining organization and intensity that have evolved in the jurisprudence of international criminal courts and tribunals are indicative rather than …

Indeterminacy In The Law Of Armed Conflict, Adil Ahmad Haque

International Law Studies

Controversy and confusion pervade the law of armed conflict. Its most basic rules may seem ambiguous, vague, incomplete, or inconsistent. The prevailing view of customary international law confronts serious problems, in principle and in practice, when applied to the customary law of armed conflict. Legal indeterminacy, in its different forms, might be reduced or resolved in light of the object and purpose of the law of armed conflict, or by taking into account other relevant rules of international law. Unfortunately, the purpose of the law of armed conflict is itself the subject of deep disagreement. So is the relationship between …

Silent War: Applicability Of The Jus In Bello To Military Space Operations, Kubo Mačák

International Law Studies

There are no molecules of air that could carry sound waves in the vacuum of outer space. Accordingly, space warfare may well become the first type of war whose signature sound would be—silence. But does the law of armed conflict (jus in bello) fall silent in times of Silent War? This article addresses the uncertainty at the heart of this issue. First, it delineates the relevant conceptual framework by examining the factual notion of “military space operations,” and its relationship with the legal concept of “armed conflict,” as well as the overlap between the potentially applicable bodies of …

Individual, Not Collective: Justifying The Resort To Force Against Members Of Non-State Armed Groups, Anthony Dworkin

International Law Studies

This article proposes an alternative to the conventional way of deciding when a State may target or detain members of an armed group. Instead of asking whether there is an armed conflict between the State and the group, this article argues that we should look at the State’s justification for the use of force against the group or its members. In a non-international context, this justification is rooted in human rights law. For this reason, the authorization for the resort to force operates on an individual basis, and the State is only justified in using force against individual members of …

The Future Of U.S. Detention Under International Law: Workshop Report, International Committee Of The Red Cross (Icrc), Harvard Law School Program On International Law And Armed Conflict (Hls Pilac), Stockton Center For The Study Of International Law (U.S. Naval War College)

International Law Studies

The International Committee of the Red Cross Regional Delegation for the United States and Canada, the Harvard Law School Program on International Law and Armed Conflict, and the Stockton Center for the Study of International Law at the U.S. Naval War College recently hosted a workshop titled Global Battlefields: The Future of U.S. Detention under International Law. The workshop was designed to facilitate discussion on international law issues pertaining to U.S. detention practices and policies in armed conflict. Workshop participants included members of government, legal experts, practitioners and scholars from a variety of countries. This report attempts to capture the …

Fragmented Wars: Multi-Territorial Military Operations Against Armed Groups, Noam Lubell

International Law Studies

Recent years have seen the emergence of significant legal debate surrounding the use of force against armed groups located in other States. With time, it has become clear that in many cases such operations are not confined to the territory of one other State, but expand to encompass multiple territories and often more than one armed group. This article examines multi-territorial conflicts with armed groups through the lens of several legal frameworks. Among other topics, it analyses the questions surrounding the extension of self-defense into multiple territories, the classification of the hostilities with the group and between involved States, the …

A Human Rights Perspective To Global Battlefield Detention: Time To Reconsider Indefinite Detention, Yuval Shany

International Law Studies

This article discusses one principal challenge to detention without trial of suspected international terrorists—the international human rights law (IHRL) norm requiring the introduction of an upper limit on the duration of security detention in order to render it not indefinite in length. Part One of this article describes the “hardline” position on security detention, adopted by the United States in the immediate aftermath of the 9/11 terror attacks (followed, with certain variations, by other countries, including the United Kingdom and the State of Israel), according to which international terrorism suspects can be deprived of their liberty without trial for the …

The Limits Of Inviolability: The Parameters For Protection Of United Nations Facilities During Armed Conflict, Laurie R. Blank

International Law Studies

This article examines the international legal protections for United Nations humanitarian assistance and other civilian facilities during armed conflict, including under general international law, setting forth the immunities of the United Nations, and the law of armed conflict (LOAC), the relevant legal framework during wartime. Recent conflicts highlight three primary issues: (1) collateral damage to UN facilities as a consequence of strikes on military objectives nearby and military operations in the immediate vicinity; (2) the misuse of UN facilities for military purposes; and (3) direct attacks on fighters, weapons or other equipment that cause damage to such facilities. To identify …