Law of War Manual

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In this handout photo provided by U.S. Central Command, Arleigh Burke-class guided-missile destroyer USS Rafael Peralta (DDG 115) implements a maritime blockade against an Iranian-flagged ship attempting to sail toward an Iranian port, on April 26, 2026 in the Arabian Sea. Rafael Peralta is deployed to the U.S. 5th Fleet area of operations to support maritime security and stability in the Middle East. (Handout photo by U.S. Navy via Getty Images)

Is the United States (Still) at War? How Wars Begin and End

Armed conflict is not a matter of political branding, rhetorical convenience, or domestic law positioning. It is a legal status that turns on objective facts.
Collage of photos, including a young boy, war-torn buildings, people walking, and a hand.

Protecting Civilians in Good Faith: A Joint Symposium on the Updated ICRC Commentary on the Fourth Geneva Convention

Expert authors examine key interpretive issues and selected topics in the updated Commentary on the Fourth Geneva Convention​ on protection of civilians during civil war.
A man watches a tugboat in a port.

The United States-Cuba Oil Embargo and International Law

Experts on naval warfare examine the international law dimensions of the United States campaign against Cuba.
A picture taken on March 12, 2017, shows a view of an oil facility in the Kharg Island, on the shore of the Gulf. (Photo by ATTA KENARE / AFP) (Photo by ATTA KENARE/AFP via Getty Images)

Targeting Enemy Logistics

In the Iran war, when do critical infrastructure and economic assets qualify as lawful military objectives under the law of armed conflict.
Wide view of highway road, a tall plume of dark grey smokes rises from the port of Jebel Ali in Dubai, under a hazy, grey sky.

Iranian Attacks on the Amazon Data Centers: A Legal Analysis

Do data centers qualify as lawful military objectives? If so, under what circumstances are they subject to attack? And what precautions must be taken before targeting them?
Wooden gavel on a blue background with glowing digital circuit patterns, representing the connection between the legal system​ and data privacy​.​ (via Getty Images)

Technology and the ICRC’s GC IV 2025 Commentary

Surveys how the 2025 ICRC GC IV Commentary integrates technology into its analysis of specific rules, while raising concerns about its treatment of data as property.
Under a hazy, grey sky, a convoy of white vehicles drives along a dusty road near Saraya Square in western Gaza City on Jan​. 19, 2025. The vehicles are marked with the the International Committee of the Red Cross' stickers and flags.

“Significantly Diminished”: Commenting Anew on Article 23 of Geneva Convention IV in a Transformed Legal Context

New Commentary on GC IV describes Article 23—the treaty’s key provision governing the duty to allow the passage of essentials to civilians—as "significantly diminished" today.
Exterior view of the International Committee of the Red Cross headquarters in Geneva, Switzerland, a large white and tan multi-story building with rows of windows and the ICRC flag on the roof, under a clear blue sky.

Closing Loopholes Across Time: the ICRC’s New Commentary on the Fourth Geneva Convention

​The ICRC's updated Commentary on the Fourth Geneva Convention fills a loophole-closing function and reasserts international humanitarian law's core protective purpose.
CARIBBEAN SEA - SEPTEMBER 22: In this handout provided by the U.S. Navy, An AH-1Z Cobra, assigned to Marine Medium Tiltrotor Squadron (VMM) 263 (Reinforced), fires an air-to-ground missile (AGM) 114N during a live-fire exercise on September 22, 2025 in the Caribbean sea.

Using an Unmarked Aircraft to Attack an Alleged Drug Boat: Is it Perfidy?

Did the Sept. 2 strike on suspected drug traffickers using an unmarked aircraft violate the prohibition on perfidy, or other LOAC rules, had there been an armed conflict?
Aerial view of the Pentagon

The International Law Obligation to Investigate the Boat Strikes

Operation Southern Spear’s lethal boat strikes are unlawful under IHRL and, even on the administration’s own terms, trigger binding LOAC and DoD duties to investigate.

Membership in a Non-State Armed Group in the DoD Law of War Manual

A critical assessment of the U.S. DoD Law of War Manual's approach to membership status in non-State armed groups.
Men walk along a street ravaged by bombing

Here’s What You Need to Know About the Pentagon’s New Civilian Harm Policy

In December 2023, the Department of Defense (DOD) quietly released its Instruction on Civilian Harm Mitigation and Response (CHMR DOD-I), which was mandated by Section 936 of the…
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