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
An Iranian flag is draped from a building damaged during a recent attack by Israel in the Gisha neighborhood of Tehran, Iran, on June 25, 2025. (Photo by Majid Saeedi/Getty Images)

Why War? Why Now? Assessing Iranian Intentions and Capabilities

Why did Israel, and then the United States, decide to attack Iran now, even as U.S.-Iranian negotiations sputtered along?
People walk by a photo of commanders killed by Israel

From War to Control: How the Recent Iran-Israel Conflict Risks Deepening the Islamic Republic’s Repression

The ceasefire may stop the bombs, but it will not reverse the repression that has long defined Islamic Republic’s internal trajectory.
People mourn at the morgue of Al-Awda hospital, in Nuseirat camp in central Gaza on June 20, 2025, after several Palestinians were killed as they reportedly headed to a food distribution centre in the war-stricken Gaza Strip, amid the ongoing conflict between Israel and the Palestinian Hamas militant group. (Photo by AFP) (Photo by -/AFP via Getty Images)

Cumulative Civilian Harm in Gaza: A Gendered View

For knowledge, accountability, and reparation we need to reconceive of the consequences of violence for Gazan civilians as composite, aggregate, collective, and layered harms.
The U.S. Capitol building is seen at sunset on March 1, 2022 in Washington, DC. (Photo by Samuel Corum/Getty Images)

The Trump Administration’s Flawed War Powers Report on Iran and the Need for a Congressional Rebuttal

The White House’s legal justifications for attacking Iran are unconvincing and raise concerns about unauthorized use of force. Congress should push back.
U.S. Defense Secretary Pete Hegseth (L), accompanied by Chairman of the Joint Chiefs of Staff Air Force Gen. Dan Caine (R), speaks during a news conference at the Pentagon on June 22, 2025 in Arlington, Virginia. U.S. President Donald Trump gave an address to the nation last night after three Iranian nuclear facilities were struck by the U.S. military. (Photo by Andrew Harnik/Getty Images)

President Trump’s Decision to Bomb Iran: From Bad to Worse

Whether newly announced ceasefire actually leads to end hostilities will not change the new reality: a comprehensive agreement is less likely now than before the bombing
Chairman of the Joint Chiefs of Staff Air Force Gen. Dan Caine discusses the mission details of a strike on Iran during a news conference at the Pentagon on June 22, 2025 in Arlington, Virginia. U.S. President Donald Trump gave an address to the nation last night after three Iranian nuclear facilities were struck by the U.S. military. In the image he is showing the media a graphic that describes the timeline of the operation. (Photo by Andrew Harnik/Getty Images)

The Day After U.S. Strikes on Iran’s Nuclear Program: A Policy and Legal Assessment

An expert policy and legal assessment of the U.S. strikes on Iran's nuclear facilities and what comes next.
The image shows a large hall from above at the rear, with at least 5 rows of desks and chairs arrayed in a crescent facing away from the viewer toward the front of the room, where officials sit at a dais flanked by two large screens on the wall behind them showing speakers giving remarks.

Time for Rightsizing: Change is Coming to the UN Counterterrorism System

The UN80 reform process, done well, offers a chance to streamline sprawling -- and too often harmful -- structures to focus on the U.N.’s core purpose.
Members of the UN Security Council listen as Ambassador Danny Danon, Permanent Representative of Israel to the UN, speaks during an emergency meeting at the United Nations Headquarters on June 13, 2025 in New York City (Michael M. Santiago/Getty Images)

Indefensible: Israel’s Unlawful Attack on Iran

Part of our ongoing series on the Israel-Iran war.
plume of heavy smoke and fire rise from an oil refinery in southern Tehran

Israel and Iran: A War with No Off-Ramp

The constellation of forces in Israel, the United States, and beyond complicates efforts to find an off-ramp to the war.
Former French president Nicolas Sarkozy leaves after a hearing in his trial on charges of illegal campaign financing from Libya for his successful 2007 presidential bid, at the Tribunal de Paris courthouse in Paris, on March 27, 2025. French prosecutors requested on March 27, 2025, a seven-year prison sentence for former president Nicolas Sarkozy in his trial on charges of accepting illegal campaign financing in an alleged pact with the late Libyan dictator. (Photo by ALAIN JOCARD/AFP via Getty Images)

The Sarkozy-Gaddafi Trial Exposes Corruption’s Devastating Effect on Libyans

Alongside its democratic commitments, France should also reckon with the human rights consequences of its Libya foreign policy and interference in the post-Sarkozy era.
France's Minister of Armed Forces Sebastien Lecornu (centre L) and US Secretary of Defense Pete Hegseth (R)

Hidden in the U.S. Army’s New Reform Initiative Is a Warning for Europe

Europe must accept that continued dependence on the United States is not viable and build a fully self-sufficient European defense.
Members of the UN Security Council hold an emergency meeting to discuss Israeli strikes on Iran. UN headquarters, June 13, 2025 (UN Photo/Loey Felipe)

A New War or a New Stage in an Ongoing War – Observations on June 13 Israeli Attack against Iran

"Another legal framework – the ongoing armed conflict framework – is more factually and legally viable than the anticipatory or preventive self-defense frameworks."
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