Diplomacy

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(L/R) US Vice President JD Vance, Jared Kushner, U.S. Secretary of State Marco Rubio look on as US President Donald Trump holds up a resolution document that he signed during the inaugural meeting of the "Board of Peace" at the US Institute of Peace in Washington, DC, on February 19, 2026. (Photo by SAUL LOEB / AFP via Getty Images)

Some Questions for Congress About Trump’s Request for Funding for the Board of Peace

Close scrutiny of the administration’s plans for contributions to the Board of Peace is warranted in light of the large dollar amounts involved.
A man takes a photo of an older man's image on a screen.

Codifying Forced Marriage in the Crimes Against Humanity Convention: From Jurisprudence to Treaty Text

States now have an opportunity to codify forced marriage as a specific violation in a proposed treaty on crimes against humanity.
Under a blue and hazy gray sky, a large oil tanker ship emits smoke while sailing the Strait of Hormuz, Persian Gulf, Iran.

Continuing Crisis in Strait of Hormuz: Why Iran’s Hold is Illegal and U.S. Military Force Alone Fails

Former US Navy Commander, JAGC Mark Nevitt provides a legal and operational update on the Strait of Hormuz crisis, including Iran’s military role and imposition of tolls.
US Special Envoy Thomas Barrack and US Ambassador to Lebanon Lisa A. Johnson met with Lebanese Prime Minister Nawaf Salam at Salam's office in Beirut, Lebanon, on July 21, 2025. (Photo by COURTNEY BONNEAU/Middle East Images/AFP via Getty Images)

Washington Is Backing the Wrong Lebanon Strategy

The U.S. should link Lebanese state-building and Hezbollah disarmament through a political process, not war, to secure a durable Israel-Lebanon ceasefire.
A huge banner of Iran's Supreme Leader Ayatollah Khamenei who was killed in joint operation named Epic Fury by Israel and the U.S. in his residence is posted on a building facade in Revolution Square on March 4, 2026 in Tehran, Iran. (Photo by Kaveh Kazemi/Getty Images

Khamenei’s Killing and the Perilous Death of the Assassination Ban

Khamenei’s killing ends the U.S. ban on assassination and signals a shift as nations may forsake diplomacy, embracing force to eliminate foreign adversaries.
IMAGES (left to right): People search through buildings, destroyed during Israeli air raids in the southern Gaza Strip on November 7, 2023 in Khan Yunis, Gaza (Photo by Ahmad Hasaballah/Getty Images); A fireball erupts during Israeli bombardment of Gaza City on October 9, 2023 (Photo by Mahmud Hams/AFP via Getty Images); The International Court of Justice (ICJ), the principal judicial organ of the UN, holds public hearings on the request for the indication of provisional measures submitted by South Africa in the case South Africa v. Israel on 11 and 12 January 2024, at the Peace Palace in The Hague, the seat of the Court (Photo by the International Court of Justice).

Just Security’s Israel-Hamas War Archive

Just Security's collection of more than 110 articles covering the Israel-Hamas War and its diplomatic, legal, and humanitarian consequences.

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.
United Nations (UN) Secretary-General António Guterres speaks at a podium at the UN headquarters while a large audience watches.

In the Race for U.N. Secretary-General, Might a Woman Finally Lead?

In 2026, a decades-old question returns to center stage: will this finally be the moment for a woman to serve as U.N. Secretary-General?
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.
Elinor Hammarskjöld (on screen), UN Under-Secretary-General for Legal Affairs, addresses the first session of the Preparatory Committee for the United Nations Conference of Plenipotentiaries on Prevention and Punishment of Crimes against Humanity, held from Jan. 19-30, 2026. (via UN Photo)

The Crimes Against Humanity Treaty Advances with First Preparatory Committee

PrepCom’s success will depend on leadership, diverse perspectives, and a shared commitment to justice in a divisive multilateral environment.
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