Foreign Relations Law

[Harold Hongju Koh is Sterling Professor of International Law at Yale Law School. He returned to Yale in January 2013 after serving for nearly four years as the 22nd Legal Adviser of the U.S. Department of State.] The editors of the rebooted Opinio Juris 2.0 and the International Commission of Jurists are most gracious to hold this impressive symposium on my...

To celebrate the launch of our new website and new members, Opinio Juris will be holding a symposium over the next two weeks on Harold Hongju Koh's new book, The Trump Administration and International Law, which was just published by Oxford University Press. (You can get a 20% discount by clicking on the OUP advertisement to the right of this...

The International Commission of Jurists organised a fascinating side-event yesterday at the Human Rights Council. Here is the ICJ's background statement: Particularly when crimes under international law are perpetrated on a large scale in situations of crisis, there is an urgent need to preserve evidence for use in eventual criminal proceedings, whether at the International Criminal Court or other national or...

[Katayoun Hosseinnejad is a university lecturer of international law and attorney at law in Iran and Pouria Askary is an assistant professor of international law at law school of ATU and a visiting professor of law at Islamic Azad University and Tarbiat Modarres University.] On May 10, two days after the US President pulled his country out of the Joint Comprehensive Plan of...

We have published a series of fascinating posts in recent days debating whether the permanent members of the Security Council have a legal obligation under the UN Charter not to veto resolutions calling for the investigation or prosecution of atrocity crimes. Jennifer Trahan argued yes; Mohamed Helal responded no; and Trahan replied yes again. I am not convinced by Trahan's response...

I had the pleasure of participating yesterday in a superb -- and long! -- panel on the 2013 siege of Eastern Ghouta. The panel discussed the facts, the law, and the politics of the siege. I was joined by Hussam Alkatlaby, the Executive Director of the Syrian Violations Documentation Centre; Joost Hiltermann, programme director for Middle East & North Africa at...

You go to war with the President you have, not the President you wish you had. We should keep that basic truth in mind as the US inches ever closer to war with Syria -- and potentially with Russia, a far more terrifying possibility. Donald Trump does not care about civilians in Syria. He does not care about containing the spread...

Elena Chachko has an interesting post at Lawfare discussing Israel's recent public acknowledgement of what the international community has long known: that it was responsible for the 2007 attack on the Al-Kibar nuclear reactor in Syria. Although I agree with much of Chachko's post, I would take issue with what she says about how the failure of states to condemn...

As Patryk Labuda noted earlier today on twitter, the Pre-Trial Chamber (PTC) has ordered the OTP to provide it with additional information concerning the investigation in Afghanistan. Here are the key paragraphs of the order: 3. The Chamber observes that the Prosecutor seeks authorisation to initiate an investigation for crimes committed on the territory of Afghanistan from 1 May 2003 onwards,...