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.

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3,526 Articles
Pete Hegseth stands at a Pentagon podium during a press briefing on ongoing U.S. and Israeli military operations in Iran, speaking in front of a blue backdrop with the Pentagon emblem​.

Hegseth Didn’t Revive an Ancient Warrior Ethos. He Repeated an American Pattern.

Hegseth's "no quarter" statement indicates how some in the Pentagon perceive the Iran war. "No quarter" language in US history has appeared when war turns colonial or racial.
US Capitol Building against a sunset

The Court Gutted Congress’s War Power. It’s Time to Give It Back.

A 1983 Supreme Court ruling eviscerated the law allowing Congress to end war. The Iran strikes make that a five-alarm emergency.

Fighting an Illegal War and Fighting a War Illegally: the Link between Regime Change Operations and International Humanitarian Law Violations

The relationship between regime change and IHL is of inherent tension, incentivizing battlefields where the law is viewed as an obstacle rather than an essential constraint.
Four women in colorful garb and headwraps work in a flat, barren field, with lines of trucks full of what appear to be soldiers or fighters in the distance.

The Risks of Gender-Blind Conflict Analysis

The relevance of women to conflict, democratic resilience, and peacebuilding is evidence-based, yet they are commonly overlooked in forecasting and response.
Wide view of Tehran’s skyline with several tall plumes of grey smoke rising between apartment buildings under a hazy, grey sky.

An Unserious Justification for an Unnecessary War: Assessing the U.S. “Article 51” Letter to U.N. on Iran War

Former US State Department attorney writes that the United States' "Article 51" letter to the UN Security Council fails to identify legal basis for Iran attack.
U.S. and Armenian delegations sit across from one another at a long table extending from the front of the photo to the back, a row of flowers in the middle, and three of the respective U.S. and Armenian flags at the back, left and right, respectively, at the end of each delegation.

Facing Russian Hybrid Threats in Advance of Elections, Armenia Struggles to Maintain Pro-U.S. and EU Path

Armenia's election is an opportunity for the country to chart a course for peace and democracy. But Russia is trying to thwart that path, and U.S. and EU help is needed.
A photographer with camera on a tripod stands in front of a soaring glass and sand-colored facade with a curved roofline.

If the U.S. Wants Durable Peace, It Must Protect the Institutions That Build It

A year ago, the Trump administration seized the U.S. Institute of Peace and began to dismantle it, gutting a key capability to reduce and prevent violent conflict.
A demonstrator holds a picture of Iran's new Supreme Leader Ayatollah Mojtaba Khamenei at Enghelab Square in central Tehran on March 9, 2026, as supporters gather for a rally backing his appointment to replace his father after Ayatollah Ali Khamenei was killed in joint U.S. and Israeli strikes on February 28.

The Entrenchment of Iran’s Security State

Three key factors explain why the Iranian regime has held on and why it is increasingly likely to survive the war.
Handout photo taken on March 11, 2026 and released by the Royal Thai Navy shows smoke rising from the Thai bulk carrier 'Mayuree Naree' near the Strait of Hormuz after an attack. (Photo by Handout / ROYAL THAI NAVY / AFP via Getty Images)

Expert Q&A on Key Law of Naval Warfare Issues in the Conflict with Iran

Top legal experts on the law of naval warfare break down the key issues in the Iran-U.S.-Israel conflict.
The Strait of Hormuz connects the Gulf of Oman with the Persian Gulf in this photograph from the International Space Station as it orbited 262 miles above. In the right foreground, is the Soyuz MS-23 crew ship docked to the Prichal docking module. At bottom left, is a portion of the Northrop Grumman Cygnus space freighter and one of its cymbal-shaped UltraFlex solar arrays (photo: NASA)

Legal and Operational Issues in the Strait of Hormuz: Transit Passage Under Fire

"During my own transits through the Strait as a naval officer aboard the aircraft carrier USS Constellation, the narrow geography and proximity of Iranian territory were impossible…
An overhead view of the Pentagon building in Washington, DC.

Hypothetical Legal Advice to SecDef Hegseth on “No Quarter” Statement (from Office of General Counsel)

A hypothetical General Counsel advice to Secretary Hegseth about his "no quarter" statement in Iran war.
Stephen Miller, Defense Secretary Pete Hegseth, and Marine General Francis L. Donovan walk side by side outdoors at U.S. Southern Command headquarters in Doral, Florida, during the Americas Counter Cartel Conference, with other officials visible in the background.

Did the United States Just Bomb Ecuador?

The U.S. military continues maritime strikes on alleged drug smugglers and may now be hitting targets on land. Brian Finucane analyzes Trump’s latest War Powers report.
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