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…

In Beyond Tehran and Nairobi: Can Attacks against Embassies Serve as a Basis for the Invocation of Self-defence? we have argued that both the empirical analysis of…

The international law of self-defense is a central branch of international law implicating fundamental matters of sovereignty. In the 20th Century, it also became associated with a broader…

In a recent piece on Just Security, Tom Ruys and Felipe Rodríguez Silvestre argue that a state whose territory is unlawfully occupied by another state does not…

Since last week Turkey has been using massive military force in Syria. Turkey has decided to call her military operation ‘Peace Spring’. ‘Peace Spring’ seems to be even…