International Law

Just Security offers expert analysis of international law and its role in addressing global challenges. Our coverage includes litigation in international and regional tribunals, the process of international law-making, analysis of compliance and accountability for international law violations–including international criminal justice, and challenges to the international legal order.

Highlights:

Gavel in front of a globe

Negotiating a Treaty on Crimes Against Humanity – Introduction to the Joint Symposium

A symposium featured expert analyses of issues related to advancing the draft International Convention on the Prevention and Punishment of Crimes Against Humanity.

The Just Security Podcast: Can the U.S. Seize Russian Flagged Oil Tankers?

Tess Bridgeman speaks with Rob McLaughlin about the legality of the U.S. interception and seizure of two Russian-flagged oil tankers in international waters.
CARIBBEAN SEA - SEPTEMBER 22: In this handout provided by the U.S. Navy, An AH-1Z Cobra, assigned to Marine Medium Tiltrotor Squadron (VMM) 263 (Reinforced), fires an air-to-ground missile (AGM) 114N during a live-fire exercise on September 22, 2025 in the Caribbean sea.

Using an Unmarked Aircraft to Attack an Alleged Drug Boat: Is it Perfidy?

Did the Sept. 2 strike on suspected drug traffickers using an unmarked aircraft violate the prohibition on perfidy, or other LOAC rules, had there been an armed conflict?
Journalists work as Ukraine's President Volodymyr Zelensky is seen on screen as he speaks to press during the European Council meeting gathering the 27 EU leaders to discuss Ukraine, European defence, and more, in Brussels, on October 23, 2025. (Photo by NICOLAS TUCAT / AFP) (Photo by NICOLAS TUCAT/AFP via Getty Images)

The EU Discovers Emergency Powers: Russian Assets Edition

When is it justified for the EU to rely on emergency measures to protect Ukraine and counter Russia?
A globe in front of books

The Prosecution of Crimes against Humanity: a National Perspective

An international convention on prevention and punishment of crimes against humanity would be a visible step toward accountability.
People watch the smoke rising from Port of La Guaira after explosions and low-flying aircraft were heard on January 03, 2026 in La Guaira, Venezuela. According to some reports, explosions were heard in Caracas and other cities near airports and military bases around 2 am. US President Donald Trump later announce that his country's military had launched a "large-scale" attack on Venezuela and captured its President Nicolas Maduro and his wife. (Photo by Jesus Vargas/Getty Images)

U.S. Intelligence in a Post-Maduro Venezuela

Intelligence has a central role to play in capitalizing on the successful capture of Maduro and stabilizing post-Maduro Venezuela, demonstrating U.S. capabilities and resolve.
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(L-R) A general view of the capital Nuuk, Greenland, on March 4, 2025. US President Donald Trump has strained relations with Denmark by repeatedly signalling that he wants control over Greenland, an autonomous Danish territory. (Photo by ODD ANDERSEN/AFP via Getty Images); U.S. Secretary of State Marco Rubio listens as U.S. President Donald Trump addresses the media during a news conference at his Mar-a-Lago club on January 3, 2026, in Palm Beach, Florida. During the remarks, Trump confirmed that the U.S. military had carried out a large-scale strike in Caracas overnight, resulting in the capture of Venezuelan leader Nicolas Maduro and his wife, Cilia Flores.(Photo by Joe Raedle/Getty Images); A general view of the capital Nuuk, Greenland, on March 4, 2025. US President Donald Trump has strained relations with Denmark by repeatedly signalling that he wants control over Greenland, an autonomous Danish territory. (Photo by ODD ANDERSEN/AFP via Getty Images)

Collection: U.S., Greenland, and NATO

Experts examine legal, political, and security dimensions of U.S. policy on Greenland, including U.S.-NATO relations, congressional oversight, and geopolitical implications.  
A person enjoys an afternoon walk near the sea on January 15, 2026 in Nuuk, Greenland. (Photo by Alessandro RAMPAZZO / AFP via Getty Images)

How Congress Can Preserve NATO and Greenland: Using 22 USC 1928f to Protect the Peace

Trump’s threats to invade Greenland risk destroying NATO itself, but a little-known statute, 22 U.S.C. 1928f, could prevent him from doing just that.
Gavel and a globe

Overview of the ILC Draft Articles for a Crimes Against Humanity Convention

An expert overview of the draft articles produced by the ILC for the upcoming U.N. conference on a Crimes Against Humanity Treaty.
Members of the Delegation of The Gambia Monday 12 January 2026 Photograph: UN Photo/ICJ-CIJ/Frank van Beek. Courtesy of the ICJ. All rights reserved.

Proving Genocide: Party Presentation

Myanmar appears to have changed its position in Gambia v. Myanmar, a historic genocide case before the ICJ. This change may prove decisive in the court's pending decision. 
The Marinera oil tanker is seen on January 14, 2026 in Hopeman, Scotland. The Marinera oil tanker, previously known as the Bella 1, has entered UK waters at the request of the US to be replenished with "essential supplies." The Russian-flagged tanker was seized by US forces on 7 January 2026, between Iceland and Scotland, for allegedly violating sanctions by transporting oil for Venezuela, Russia, and Iran. (Photo by Peter Summers/Getty Images)

A Law of the Sea Assessment of the U.S. boarding of the Bella 1 / Marinera

Based on the publicly available information to date, it is difficult to sustain the lawfulness of the U.S.-led and UK-supported seizure of the Marinera.
View of smokestacks

Legal and Practical Implications of the U.S. Withdrawal from the U.N. Framework Convention on Climate Change

The U.S. withdrawal from the UNFCCC is a further blow to climate cooperation and a demonstration of U.S. foreign policy volatility.
A collage of images featuring scenes from the Russia - Ukraine War.

Just Security’s Russia–Ukraine War Archive

A catalog of over 100 articles (many with Ukrainian translations) on the Russia Ukraine War -- law, diplomacy, policy options, and more.
NATO Leaders join King Willem-Alexander and Queen Máxima of the Netherlands for a family photo as they participate in the 2025 NATO summit on June 24, 2025 in The Hague, Netherlands. (Photo by Haiyun Jiang-Pool/Getty Images)

The North Atlantic Treaty and a U.S. Attack on Denmark

Would NATO have to defend Denmark if the United States attempted to seize Greenland? Article 5 suggests other allies are obligated to come to Denmark's defense if requested.
Silhouette of President Donald Trump outside the White House in the evening.

The United States in Retreat

Whatever the modest cost-savings that are generated by this U.S. withdrawal from the multilateral system, the loss of long-term influence will be far greater.
Gavel on an old world map

80 Years After Nuremberg, Envisioning the Future of International Law

For international criminal law to remain a compelling set of norms, the central principles that formed Nuremberg must be vigorously defended.
The International Court of Justice (ICJ), principal judicial organ of the UN, holds public hearings (by video link) on the preliminary objections raised by Myanmar in the case concerning "Application of the Convention on the Prevention and Punishment of the Crime of Genocide" (The Gambia v. Myanmar) at the Peace Palace in The Hague, from 21 to 28 February 2022. Sessions are held under the presidency of Judge Joan E. Donoghue, President of the Court.

Elements of Genocide: Intent to Kill

The ICJ should explicitly interpret ‘intentionally’ killing members of a group to include dolus directus and dolus eventualis in the case brought by Gambia against Myanmar.
Binders of executive orders stacked on a desk.

Collection: Just Security’s Coverage of Trump Administration Executive Actions

Coverage of key developments, including in concise “What Just Happened” expert explainers, legal and policy analysis, and more. Check back frequently for updates.
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