international law

Geoengineering and the Use of Force

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(Published in Opinio Juris, Jan. 20, 2021).

It is now widely accepted that the climate change crisis is going to contribute to increasing levels of armed conflict among and within states in the coming decades. Less widely considered is the effect the crisis may have on the jus ad bellum regime. In a two-part essay in Opinio Juris (and in a much longer law review article), I have suggested that there will be growing pressure to relax the jus ad bellum regime when the more dire consequences of the climate change crisis begin to manifest themselves. That is, there will be mounting claims that the threat or use of force may be justified against those “climate rogue states” perceived to be recklessly and unlawfully contributing to the growing threat to international peace and security.

This argument may seem rather radical and unlikely from today’s perspective. But in this essay, I will examine how the case of geoengineering may help to illustrate just how some of the threats posed by climate change will create real tension for the jus ad bellum regime. The essay explores the hypothetical situation in which one country moves to unilaterally engage in a geoengineering scheme that many other states think will cause catastrophic harm to the climate and the ecosystem. How would the international community likely respond, and with what implications for international law?

Geoengineering

As most readers will know, the term geoengineering refers to large-scale intervention and manipulation of the environmental systems for purposes of either reducing the pace or countering the effects of climate change. There are many different avenues being explored, ranging from different methods of carbon dioxide removal (CDR), to various forms of solar management regulation (SRM). The latter is a broad category of methods that aim to lower or maintain the temperature of the Earth’s atmosphere by reducing the exposure of the Earth’s surface to the full brunt of energy from the sun.

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New Podcast on the Laws of War

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In mid-July I launched a new podcast series called “JIB/JAB – The Laws of War.” It will feature conversations with experts in the various legal regimes that govern aspects of the use of force and armed conflict — namely, the jus ad bellum, jus in bello, international human rights law, constitutional war powers, and some others in the margins — focusing on both their recent work, and how it may relate to recent events. I am hoping to strike a delicate balance wherein it will be of interest and value to both experts and non-experts (including students) alike. For more information and to peruse the episodes already up, check out the website at http://jibjabpodcast.com — or subscribe on most podcast platforms.

Atmospheric Intervention?

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cjelMy latest law review article has just been published: “Atmospheric Intervention? The Climate Change Crisis and the Jus ad Bellum Regime,” 45 Columbia Journal of Environmental Law 331 (2020). Here is the abstract:

Many governments have begun to understand that the consequences of climate change will increasingly create both direct and indirect threats to national security. Under some projected scenarios these consequences may pose an existential threat to human civilization. Yet there has been little attention to how this will implicate the jus ad bellum regime. As the climate change crisis becomes more severe, states will begin to view not just the consequences but some of the causes of climate change as comprising a threat to national security. Specifically, they will begin to characterize other states’ recklessly excessive and flagrantly unlawful contributions to climate change as a threat to international peace and security. The international climate change regime will be sufficiently developed to help frame such characterizations, but incapable of enforcing or mobilizing compliance with its obligations.

States will thus look to the collective security regime to coerce such “climate rogue states” to comply with their climate change law obligations. The identification of climate rogue states as posing a threat to international peace and security will trigger the basis for collective action, up to and including the threat or use of force. In the face of UN Security Council inaction, there will be increasing pressure on the jus ad bellum regime to adjust so as to permit and justify such action. Recent efforts to relax the constraints of the jus ad bellum regime, in response to other purportedly novel threats — such as nuclear proliferation, transnational terrorism, cyber-attacks, and humanitarian crises — provide templates for the kind of arguments we may anticipate for justifying action against “climate rogue states.” We will see efforts to expand the doctrine of self-defense, or to establishing new exceptions to permit “atmospheric interventions.”

The logic of these arguments for adjusting the jus ad bellum regime are more powerful than recent efforts, because the threat they seek to address will increasingly appear to outweigh the resulting increased risk of armed conflict. They will likely gain traction as the crisis deepens. This requires us now, before fear drives the agenda, to begin a discussion of how such adjustment might best be shaped, limited, or resisted. As compelling as they will become, the arguments are dangerous. They will not only weaken the jus ad bellum regime but are likely to compound some of the injustices of the climate change crisis and undermine the international rule of law in ways that will be counterproductive to our efforts to respond to the crisis.

Questions on Legality of Israeli Strikes in Iraq and Lebanon

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(Published in Just Security, Sept. 9, 2019)

A flurry of news reports during the final week of August detailed recent Israeli air strikes against Iranian affiliated groups in Iraq, Lebanon, and Syria. The Washington Post published an Editorial questioning the wisdom of this Israeli policy, though typically, and regrettably, utterly neglected to consider issues of legality. It did repeat the media mantra that “Israel has a right to defend itself from Iranian attacks,” but then failed to examine whether any of the Israeli strikes had been responding to actual or imminent armed attacks. A New York Times analysis of the escalation similarly avoided the legal questions.

The short answer, based on publicly available evidence (discussed below), would be that the strikes were unlawful. Only one of the strikes on Syria was reportedly responding to an imminent attack, which should thus make for a very short analysis on the legality of the rest of the strikes. But a brief and somewhat disjointed exchange among some international law scholars on Twitter last week raised some questions and advanced some arguments (to the extent Twitter can sustain such a thing) that suggested a perhaps more complex and interesting analysis. I explore that line of analysis here.

Some Facts

First, a brief review of some of the facts. Israel carried out several air strikes in July and August in Syria, Iraq, and Lebanon. For simplicity I will leave the strikes in Syria aside for now, and focus on the strikes in Iraq and Lebanon, though it should be understood that Israeli representatives have argued that most of the strikes (or those that have been acknowledged by Israel) served the same broad purpose of preventing Iran from establishing a weapons supply line through Iraq and Northern Syria to Hezbollah in Lebanon.

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