Introduction Marko Milanovic recently wrote a blog for EJIL: Talk! examining whether Israel can rely on the right of self-defence to justify its military action…

Numerous States, making statements before the UN Security Council or the UN General Assembly during the last resumption of its tenth Emergency Special Session, have recognized the right…

This is a deceptively simple question. It has several possible answers, each of which rests on different (and highly contested) assumptions. In this post I will try to…

On 22 May 2023, two Russian paramilitary groups – the Liberty of Russia Legion (LSR) and the Russian Volunteer Corps (RDK) – conducted a cross-border raid from Ukrainian…

Yesterday a missile struck a village in Poland, near the Ukrainian border, prompting immediate fears of escalation and of a more direct entry of NATO states into the…

When did Russia’s armed attack on Ukraine begin? And, before it began, when did it become imminent, as that term is commonly understood in the international law on…

This episode accompanies the launching of a new rubric in the European Journal of International Law – Legal/Illegal. The first installment of Legal/Illegal, which appears in issue 32(4), focuses…

The rush to judgment can be deceptive. A recent contribution to these pages cautions us against making instant assumptions of fact and law when considering Russia’s recognition…

Russia’s attack on Ukraine is an obvious violation of international law. Neither self-defense nor the entirely baseless accusation of a purported “genocide” in Eastern Ukraine serves as a…

With missile and aerial strikes across Ukrainian territory and Russian ground forces entering Ukraine from multiple directions, there is now no doubt that the Russian Federation has used…