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U.S. Secretary of Defense Pete Hegseth arrives to testify before the Senate Armed Services Committee in the Dirksen Senate Office Building on June 18, 2025 in Washington, DC.

What Hegseth’s “Supply Chain Risk” Designation of Anthropic Does and Doesn’t Mean

Abuse of a tailored national security authority to resolve an ideological dispute playing out over DoD’s desire to change its contractual terms should not be taken lightly. 
A plume of smoke rises above road traffic after an explosion on March 2, 2026 in Tehran, Iran. The United States and Israel continued their joint attacks that erupted on February 28. Iran retaliated by firing waves of missiles and drones at Israel, and targeting U.S. allies in the region. (Photo by Majid Saeedi/Getty Images)

Aggression by the United States and Israel, Misdirected Self-Defense by Iran, and Collective Self-Defense of Gulf States

Analysis of the legality of U.S.-Israel actions against Iran, Iran’s response, and third-party states’ legal options and obligations under the UN Charter.
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.
Screenshot of Memorandum for Legal Advisor, National Security Council Re: Proposed War Department Operation to Support Law Enforcement Efforts in Venezuela, published December 23, 2025.

The Trump Administration’s Theory of Constitutional War Powers: “The President Could Decide”

The legal memo justifying its Venezuela operations provides insight into the administration's use-of-force decisions and the factual evidence undergirding them.

Early Edition: March 2, 2026

Signup to receive the Early Edition in your inbox here. A curated guide to major news and developments over the weekend. Here’s today’s news: IRAN Saturday  U.S. and Israeli…
A plume of smoke rises following a reported explosion in Tehran on February 28, 2026. Israel's defence ministry announced February 28 it had launched a "preemptive strike" on Iran as sirens sounded in Jerusalem and people across the country received phone alerts about an "extremely serious" threat.

International Reactions to Military Strikes on Iran: A Tipping Point for the UN Charter?

Positions taken at the UN Security Council are a harbinger of whether the legal cornerstone of the international order that is designed to maintain world peace can hold.
Flags of USA and Iran

Top Experts’ Backgrounder: Military Action Against Iran and US Domestic Law

Experts who advised a president on use of force answer a full range of basic questions on the conditions under which action against Iran would be lawful, and what options Congress…
A collage of recent featured images from Just Security articles.

Digest of Recent Articles on Just Security (Feb. 23-27, 2026)

Russia-Ukraine War • ICE and CBP Operations • U.S. Lethal Strikes • Epstein Files • Ethiopia • Syria • Genocide / Myanmar • Symposium: Updated ICRC Commentary •…
Two small children unload white bags off of a big white truck with a Red Crescent sign on the side, at dusk. A woman fully covered in a black chador stands next to the truck with her back to the camera.

Syria’s Al-Hol Camp Is Closed, But Another Remains, as Does International Responsibility

Responsible states can end the chaos and suffering in remaining camps like Roj by repatriating detainees and upholding their obligations to their citizens.

Early Edition: February 27, 2026

Signup to receive the Early Edition in your inbox here. A curated weekday guide to major news and developments over the last 24 hours. Here’s today’s news: GLOBAL AFFAIRS…
Observers film ICE agents as they hold a perimeter after one of their vehicles got a flat tire on Penn Avenue on February 5, 2026 in Minneapolis, Minnesota. Protests continue calling for an end to immigration raids which have already resulted in the fatal shooting deaths of Alex Pretti, a VA nurse, and Renee Good, a mother of three, by federal agents. (Photo by Stephen Maturen/Getty Images)

Confrontation in Court: How to Hold the Trump Administration Accountable for Violating Court Orders

Judge Schiltz’s orders in Tobay Robles v. Noem expose 96 ICE court-order violations in one month and show how forcing top officials to testify can restore the rule of law.
Three men wearing prostheses and a woman in a colorful long dress sit in a mostly empty room with bare floors and light coming from windows at the back.

Risk of Renewed War in Tigray: Painful Reminders From Ethiopia’s Last War Demand Action to Prevent Another

With the possibility of renewed fighting in Ethiopia's Tigray region, reminders of the toll and recommendations for the world to take preventive action.
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