Armed Conflict
Just Security’s expert authors provide analysis on the legal, policy, and strategic dimensions of armed conflict, including the Russia-Ukraine war, the Israel-Hamas war, counterterrorism operations, conflicts in the Middle East and North Africa, and other armed conflicts across the globe, with a focus on international humanitarian law, war crimes and accountability, mitigating and remedying civilian harm, and the humanitarian impacts of warfare.
3,562 Articles

Was Targeting Ayatollah Khamenei and Other Iranian Leaders Lawful? What Precedents Does It Set?
After Iran’s supreme leader, Ali Khamenei was killed in a U.S. and Israeli attack, a key question arises: when is striking a member of the enemy leadership lawful under the laws…

Double Preemption, Imminence, and the U.S. Attack Against Iran
Secretary of State Marco Rubio’s argument that Operation Epic Fury was an act of preemptive self-defense is not credible and does not satisfy the necessary precondition.

Russia’s Big War at Four: Ukraine Keeps Fighting and Keeps Talking
Ukrainians have withstood the Russian onslaught and, thanks to Europe, have managed despite the reduction of U.S. military assistance. Trump has more he could offer.

Top Questions the Trump Administration Needs to Answer on War with Iran
What Congress, journalists, and the public should ask the Trump administration about its war in Iran.

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.

“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.

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.

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.

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…

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.

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.

Proving Genocide: Genocidal Intent and Other Aims
In Gambia v. Myanmar, genocidal intent coexists with other aims, revealed through conduct or official statements, showing how destruction of a group can serve broader goals.