International Humanitarian Law (IHL)
641 Articles

Between the Law of Force and the Law of Armed Conflict
Last week, I argued in favor of the ICRC’s position that if one state uses armed force in the territory of another state then an international armed conflict (IAC) arises between…

Whose Armed Conflict? Which Law of Armed Conflict?
When one state, say, the United States, uses military force on the territory of another state, say, Syria or Pakistan, without the consent of that state, what legal rules constrain…

Triggers and Thresholds of Non-International Armed Conflict
When and where does the law of non-international armed conflict apply? Since most contemporary armed conflicts are fought between states and organized armed groups, or between…

Aiding and Abetting for Saudi War Crimes: Lessons from Holder v. Humanitarian Law Project
In 2010, human rights organizations argued in Holder v. Humanitarian Law Project that if we want to promote compliance with the law of armed conflict, we cannot punish advocacy…

Two U.S. Positions on the Duty to Ensure Respect for the Geneva Conventions
When should the U.S. government reverse a previous U.S. interpretation of a treaty? Should there be a presumption against doing so, and what process and substantive reasons should…

Trump’s Calls to Pillage Iraqi Oil
In his appearance with Secretary Clinton at NBC’s Commander-in-Chief Forum earlier this month, Donald Trump called for actions that amount to a war crime. Addressing US policies…

The Updated First Geneva Convention Commentary, DOD’s Law of War Manual, and a More Perfect Law of War: Part III
This third post of a series on the ICRC’s Updated Commentary on the First Geneva Convention of 1949 offers some concluding observations and further comparisons with the recent…

The ICRC Updated Commentaries: Reconciling Form and Substance, Part II
Last week, I left off my exploration of the International Committee of the Red Cross’s (ICRC) 2016 Updated Commentaries on the First Geneva Convention of 1949 by asking…

Evaluating Proportionality and Long-Term Civilian Harm under the Laws of War
As noted by Alex Whiting in his piece last week, the law of armed conflict, or international humanitarian law (IHL), contains broad principles and prohibitions that are applied…

The ICRC Updated Commentaries: Reconciling Form and Substance, Part I
Sean Watts’ July 5, 2016 post focuses attention on two significant documents intended to clarify “how best to read and understand the law of war” in the 21st Century: the…

Chemical Weapons Use Returns to Syria
This post is the latest installment of our “Monday Reflections” feature, in which a different Just Security editor examines the big stories from the previous week or looks…

The Updated First Geneva Convention Commentary, DOD’s Law of War Manual, and a More Perfect Law of War: Part II
Earlier this month, I commented on the similarities and differences between the Updated Commentary on the Geneva Conventions of 1949 and the US Defense Department’s new Law…