Marc Weller


Marc Weller is Professor of International Law and International Constitutional Studies in the University of Cambridge. He is the former Director of the Lauterpacht Centre for International Law and the Principal Editor of the Oxford Handbook on the Use of Force in International Law.

Recently Published

Time for another Ukrainian Genocide Case?

In his as ever instant and persuasive reporting and analysis, Marko Milanovic has drawn attention to the rather unusual and, presumably for Ukraine, unexpected result in the jurisdictional phase of the Ukraine/Russian Federation genocide case. The case appears to reverse the thrust of the Preliminary Measures Order decided by the ICJ just weeks after the invasion…

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Does the ICJ have the Legal Authority to Pronounce itself on the Right to Self-Defence?

Jesse Lempel raises a profound issue in his recent post concerning the South African application for provisional measures against Israel in the Gaza genocide case. He asserts that the International Court of Justice, the principal judicial organ of the United Nations, cannot ‘order provisional measures that impair a state’s right to self-defence.’ The argument appears to be…

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The UK Supreme Court Reference on a Referendum for Scotland and the Right to Constitutional Self-determination: Part II

In a previous post, I introduced the recent decision of the UK Supreme Court that the Scottish parliament lacks the authority to legislate for an independence referendum. This post will focus on the part of the Court’s judgment where it appears to have denied that self-determination applies to Scotland. While it is of course true…

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