Category: War

On The Decision to Leave Afghanistan

This post is not an assessment of the military performance of the Afghan National Army or whether the American withdrawal made sense politically (or if it could have been planned better). There are more qualified people for that task. What’s lacking in the current discussion is a just war perspective; in other word, a moral assessment of the decision to wrap up our military involvement in Afghanistan. This post offers a tentative analysis of President Biden’s decision to pull out of Afghanistan and, crucially, to do nothing to aid the government of President Ghani when it became evident Kabul would fall. (more…)

From the Vault: Collaboration with Journal of Applied Philosophy

While Justice Everywhere takes a break over the summer, we recall some of the highlights from our 2020-21 season. This post focuses on our ongoing collaboration with the Journal of Applied Philosophy.

In 2019, Justice Everywhere began a collaboration with the Journal of Applied Philosophy. The journal is a unique forum that publishes philosophical analysis of problems of practical concern, and several of its authors post accessible summaries of their work on Justice Everywhere. These posts draw on diverse theoretical viewpoints and bring them to bear on a broad spectrum of issues, ranging from the environment and immigration to economics, parenting, and punishment.

For a full list of these posts, visit the JAP page on Justice Everywhere. For a flavour of the range, you might read:

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What’s the problem with killer robots? Some reflections on the NSCAI final report

At the start of March, the US National Security Commission on AI (NSCAI), chaired by Eric Schmidt, former CEO of Google and Robert Work, former Deputy Secretary of Defense, issued its 756-page final report. It argues that the US is in danger of losing its technological competitive advantage to China, if it does not massively increase its investment in AI. It claims that

For the first time since World War II, America’s technological predominance—the backbone of its economic and military power—is under threat. China possesses the might, talent, and ambition to surpass the United States as the world’s leader in AI in the next decade if current trends do not change.

At the same time, it highlights the immediate danger posed to US national security by both China’s and Russia’s more enthusiastic use of (and investment in) AI, noting for instance the use of AI and AI-enabled systems in cyberattacks and disinformation campaigns.

In this post, I want to focus on one particular part of the report – its discussion of Lethal Autonomous Weapons Systems (LAWS) – which already received some alarmed headlines before the report was even published. Whilst one of the biggest  challenges posed by AI from a national security perspective is its “dual use” nature, meaning that many applications have both civilian and military uses, the development of LAWS has over the past decade or so been at the forefront of many people’s worries about the development of AI thanks to the work of the Campaign to Stop Killer Robots and similar groups.

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Introducing Political Philosophy with Public Policy

What is a good way to learn about political philosophy? Plausibly there is a variety of reasonable answers to this question, depending on what and why one wants to know about the subject, and it is some testament to this that there are excellent introductions that focus on the issues, concepts, and key thinkers in the field.

In our recent book – Introducing Political Philosophy: A Policy-Driven Approach – Will Abel, Elizabeth Kahn, Tom Parr, and I offer an approach that focuses on introducing the subject through the lens of public policy.

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Why We (Usually) Shouldn’t Fund Rebellions

In this post, Helen Frowe discusses their recent article in the Ethics of Indirect Intervention symposium in Journal of Applied Philosophy on how funding rebel fighters can cause unjust harm.


Consider the following scenario, Rebellion.

Rebellion: A rebel group in Eastland is waging an armed revolt against its unjust, murderous government. If they are successful, they will avert significant harm to their people. A foreign state, Westland, is providing the Eastlandic rebels with financial support, hoping that this will enable the rebels to replace their oppressive government and thereby save lives.

This kind of indirect support for foreign uprisings has been rather fêted in recent years. It enables governments to assist those in need without risking the lives of their own armed forces. But is it the right thing to do?

Philosophical discussions of the ethics of assisting rebellions have, thus far, focused on features of the rebellions. For example, they worry about the moral character and aims of the groups that are being funded, whether foreign support will prolong war, or render a new regime less stable, and how foreign interference bears on issues of self-determination. But in a recent article, I argue that there can be decisive moral objections to funding rebellions that are independent of these features of rebellions. These objections are grounded in the contours of our duties to rescue.

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Selling Weapons to Oppressive Regimes: Does it Make a Difference?

In this post, James Christensen discusses their recent article in the Ethics of Indirect Intervention symposium in Journal of Applied Philosophy on how selling weapons to oppressive regimes harms their victims.


Liberal states often promote arms sales to oppressive regimes. Though these sales are controversial, politicians and other public figures often seek to defend them. According to one line of defence, the sales are inconsequential; they make no morally relevant difference to the harms that oppressive regimes can inflict. This is said to be because these regimes would inevitably acquire weapons from somewhere. In defence of an appearance he once made at a Dubai arms fair, it has been alleged that Prince Charles once argued: “if the UK doesn’t sell [arms] someone else will.” A similar argument was made more recently by former British foreign secretary Philip Hammond. We can refer to this line of defence as the inconsequence argument. In a new article, I offer a reply to this argument.

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A Symposium on The Ethics of Indirect Intervention

In this post, Helen Frowe and Ben Matheson introduce a symposium they recently edited in Journal of Applied Philosophy on the ethical issues that arise in indirect interventions.


Recent years have seen a marked shift in political responses to humanitarian crises abroad. In the aftermath of disastrous wars in Iraq and Afghanistan, governments are increasingly reluctant to engage in direct foreign intervention – that is, to put ‘boots on the ground’ in overseas conflicts to try to protect foreign citizens from harm. Several countries are, instead, increasingly advocating and employing indirect forms of intervention, such as overtly funding, arming, or training foreign rebel groups. France, Turkey, the UK and the US have armed and trained rebels in Syria, for example.

We might think that indirect intervention avoids the moral perils that arise in cases of direct intervention. But, to the contrary, indirectly contributing to war raises a host of moral concerns, as a growing body of literature in the ethics of war attests. And, of course, not all indirect contributions to foreign conflicts fall under the description of aiding foreign citizens. On the contrary: governments sell, or facilitate the selling of, weapons and equipment to authoritarian states that use those weapons to harm their citizens. Just as we ought to be concerned about vaunted attempts to influence foreign conflicts by supporting rebels, we ought to be concerned about third parties’ rather less publicised roles in suppressing resistance abroad. In this post, we summarise a symposium exploring some of these issues, presented at a workshop organised by the Stockholm Centre for the Ethics of War and Peace.

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From the Vault: Journal of Applied Philosophy

While Justice Everywhere takes a break over the summer, we recall some of the highlights from our 2019-2020 season. This post focuses on the launch of our collaboration with the Journal of Applied Philosophy.

In 2019-20, Justice Everywhere began a collaboration with the Journal of Applied Philosophy. The journal is a unique forum that publishes philosophical analysis of problems of practical concern, and several of its authors post accessible summaries of their work on Justice Everywhere. These posts draw on diverse theoretical viewpoints and bring them to bear on a broad spectrum of issues, ranging from the environment and immigration to economics, parenting, and punishment.

For a full list of these posts, visit the journal’s author page. For a flavour of the range, you might read:

Stay tuned for even more from this collaboration in our 2020-21 season!

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Justice Everywhere will return in full swing on 7th September with fresh weekly posts by our cooperative of regular authors. If you have a suggestion for a topic or would like to contribute a guest post on a topical subject in political philosophy (broadly construed), please feel free to get in touch with us at justice.everywhere.blog@gmail.com.

Causation and Liability to Defensive Harm

In this post, Lars Christie discusses his recent article in the Causation in War Symposium in Journal of Applied Philosophy on why causal responsibility is not a requirement for individual liability to defensive harm.


The traditional view in just war theory has been to distinguish sharply between combatants and non-combatants, holding that the latter group is immune from intentional targeting in war, whereas the former can be targeted without further discrimination.  A new revisionist position in contemporary just war theory rejects this view and the underlying concept of collective liability on which it rests.  According to the revisionist view, whether a person is liable to attack depends solely on their individual moral responsibility for causally contributing to an unjust threat.

A familiar criticism of the revisionist view is that it is too permissive. Since many non-combatants are responsible for individual contributions to the war the revisionist view counterintuitively rules many non-combatants liable to attack. In my article, I present a new and different worry. If causal responsibility is a requirement on individual liability, then many combatants will escape liability to defensive harm, because their actions do not in fact causally contribute to the war. This implication makes the revisionist view too restrictive, or so I argue.

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Causal Contribution in War

In this post, Helen Beebee & Alex Kaiserman discuss their recent article in the Causation in War Symposium in Journal of Applied Philosophy on how a probabilistic account of causation speaks to civilian immunity in war.


According to orthodox just war theory, combatants in armed conflicts don’t have rights against being intentionally killed. But this position has come under sustained attack from moral theorists in recent years. What grounds permissible killing in war, many argue, is just what grounds permissible killing in ordinary life.

It’s not OK to kill someone out of revenge, or even because they just stole your expensive laptop and that’s the only way to retrieve it; but it is OK to kill them if they pose an immediate and unjustified threat to the life of you or your neighbour or a stranger, and killing them is the only way of averting that threat. Similarly for combatants: the right to life is universal, so if a combatant lacks such a right, it’s not in virtue of being a combatant, but rather in virtue of having forfeited her right by wrongfully contributing to an unjustified lethal threat to another person, thereby rendering her liable to be killed in self- or other-defence.

One consequence of this approach is that not all combatants are equal. If the armed forces of Aggressorland unjustifiably threaten the citizens of Victimland, they may forfeit their rights not to be killed by the armed forces of Victimland. But in threatening to respond in this way, the armed forces of Victimland do not forfeit their rights against being intentionally killed, because the threat they pose is justified. In some ways, then, this revisionist approach to the ethics of war offers more moral protections to agents in armed conflicts than traditional just war theory.

The focus of our paper, however, is on the consequences of such a view for non-combatants. On the face of it, if combatants shouldn’t be stripped of their rights to life simply in virtue of being combatants, then neither should noncombatants be allowed to keep their rights to life simply in virtue of being non-combatants. The civilians of Aggressorland may have wrongfully contributed in all kinds of ways to the unjustified threat to Victimland: by voting for the war, manufacturing arms, providing food and medical assistance, or writing pro-war articles, for example. The revisionist seems forced to concede that these civilians, as well as the combatants they support, are legitimate targets of defensive attack.

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