Ukraine

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The United States and Allies Sharing Intelligence with Ukraine

A remarkable feature of the ongoing Russo-Ukrainian conflict is the strategic and tactical role played by the sharing of intelligence between the US (and other Western allies) and Ukraine. That intelligence sharing started even before the war, in support of claims made publicly and privately about an imminent Russian attack against Ukraine (on which see more here). But it has continued since, including at an operational or tactical level, and has only gained in pace, as shown by recent reporting by NBC News and the New York Times. In the initial stages of the conflict, the sharing of intelligence with Ukraine appeared to be constrained by one legal concern – the United States did not want to become a party to the international armed conflict between Russia and Ukraine by providing direct targeting support. An NBC report dated 4 March reported a senior US congressman as stating that: We want to support the Ukrainians in every way we possibly can, without going to war with Russia…

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Generous, but Equal Treatment? Anti-Discrimination Duties of States Hosting Refugees Fleeing Ukraine

More than 5 million refugees have recently fled Ukraine, the fastest-growing mass displacement in this century. About a quarter of Ukraine’s population and half of its children have fled their homes. The European Union (EU) responded with a first-time activation of the Temporary Protection Directive (TPD). Lurking behind tremendous generosity, States have treated…

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The Rhetoric of ‘Denazification’ of Ukraine from the Perspective of the Law of Occupation

From the onset of the illegal (see, e.g., Milanovic, Wilmshurst, Spagnolo, Roscini, Green/Henderson/Ruys) invasion of Ukraine in February 2022 by Russia, Russian officials, and in particular, President Vladimir Putin, have employed the word ‘denazification’ as one of the aims of the invasion (or ‘special military operation’, in the Orwellian language employed by…

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Is There a Legal Duty to Cooperate in Implementing Western Sanctions on Russia?

Following Russia’s invasion of Ukraine, the United States, Europe and other allies imposed sanctions on Russia for violating the prohibition against the use of force, a peremptory norm owed to the international community as a whole. While the ability of these sanctions per se to put a swift end to Russia’s invasion has been doubted (see…

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When did the Armed Attack against Ukraine become ‘Imminent’?

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 the use of force? In this post I will offer some thoughts on these two questions, not because they are directly relevant to the situation in Ukraine – they are…

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