Armed Conflict • International Law
Use of Force
936 Articles

U.S. Federal Statute on Aiding and Abetting: War Crimes in Yemen – Part II
This piece is the second of two on U.S. operations in Yemen and the War Crimes Act, and the latest article in our forum on the Yemen crisis and the law. In September 2017, Ryan…

Civilian Casualties and Effectiveness of U.S. Drone Strikes in Yemen
This is the first of two articles on U.S. counterterrorism operations in Yemen. It also the latest in a new series we are producing in partnership Columbia Law School’s Human…

Somalis Harmed by Suspected Drone Strikes Demand Accountability
This article is the latest in a new series we are producing in partnership Columbia Law School’s Human Rights Institute that features the voices of experts and advocates from…

Civilian Casualties: We Need Better Estimates—Not Just Better Numbers
The Pentagon could do a better job reducing civilian casualties in wartime. Here's how.

“License to Kill” in Salisbury: State-sponsored assassinations and the jus ad bellum
Above: U.K. Ambassador to the U.N. Jonathan Allen speaks at an urgent meeting of the Security Council on the recent nerve agent attack in Salisbury, U.K. on March 14, 2018. (Spencer…

When Does the Legal Basis for U.S. Forces in Syria Expire?
The State Department announced earlier this year that the “full and complete defeat of ISIS” is a necessary condition for ending U.S. military operations in Syria. But Senators…

Just Security Podcast: Daphne Eviatar on Military Targeting under Trump
The sharp uptick in civilian casualties from U.S. military operations across the world under President Trump has alarmed human rights lawyers, who say the legal standards for targeting…

Doe v. Mattis: Is the War on ISIS Legal?
Many members of Congress, including those who voted for the 2001 and 2002 AUMFs, feel they haven’t authorized the current fight against ISIS. Unless the executive branch prolongs…

The “Shift Cold” Military Tactic: Finding Room Under International Law
It should surprise no one that evolving military practice raises novel legal questions. It may surprise many that the increasing use of “shift cold” techniques by advanced…

The “Shift Cold” Military Tactic and International Humanitarian Law
New technology allows for new military tactics in urban warfare. Legal questions have been raised about a military practice--called "shift cold"--in which an operator redirects…

“Reasonable Certainty” vs “Near Certainty” in Military Targeting–What the Law Requires
Former deputy legal counsel to the Chairman of the Joint Chiefs of Staff, Commander (ret.) Mike Adams and former Special Counsel to General Counsel of the Dep’t of Defense, Ryan…

Japan’s Definition of Armed Attack and ‘Bloody Nose’ Strikes Against North Korea
There has been an important discussion in the last couple of weeks over the legality of possible limited strikes, part of a so-called “bloody nose” strategy, by the United…