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Iranians gather while blocking a street during a protest in Tehran, Iran on January 9, 2026. The nationwide protests started in Tehran's Grand Bazaar against the failing economic policies in late December, which spread to universities and other cities, and included economic slogans, to political and anti-government ones. (Photo by MAHSA / Middle East Images / AFP via Getty Images)

Military Force Will Not Help the People of Iran

This is an Iranian uprising, and it is up to the people of Iran to decide their own future.
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.
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.
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.
US Capitol building at sunset with moon

War Powers, Venezuela, Drug Boats, and Congress

The last year of unauthorized military interventions and the president’s threats should spur Congress to reassert its constitutional prerogatives over the use of force.
Trump is standing at a wooden lectern with the presidential seal on the front of it. The officials are arrayed behind him, against a dark blue backdrop with an American flag and a presidential flag between the backdrop and the officials. All the men are wearing suits, except Caine, who is wearing a blue Air Force uniform.

Trump’s New Year Foreign Policy: The Risk that the Bold and the Bad Outweigh the Constructive

Trump’s foreign policy remains an inconsistent array of initiatives and adventures: bold in Latin America, bad in Greenland, yet often constructive on Ukrainian security.
The facade of the ICC building.

Hollowing Out Complementarity: The ICC Rejects Israel’s ‘Court of Last Resort’ Admissibility Challenge

The ICC Appeals Chamber affirmed the case against Israeli leaders, narrowing Article 18 complementarity and raising concerns about the Court’s treatment of non-member states.

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.

Collection: U.S. Lethal Strikes on Suspected Drug Traffickers, Operation Southern Spear, Operation Absolute Resolve

Collection of expert analysis on the legality of the U.S. strike on Venezuelan vessels in the Caribbean, the consequences of the strike, and related issues.
WASHINGTON, DC - DECEMBER 02: U.S. Secretary of Defense Pete Hegseth (R) looks on as U.S. President Donald Trump speaks during a meeting of his Cabinet in the Cabinet Room of the White House on December 02, 2025 in Washington, DC. (Photo by Chip Somodevilla/Getty Images)

Expert Q&A on U.S. Military Actions on Venezuela and Boat Strikes

Expert FAQ on the U.S. military operations against Venezuela, high seas boat strikes, seizure of vessels and more.
Picture of fire at Fuerte Tiuna, Venezuela's largest military complex

International Law and the U.S. Military and Law Enforcement Operations in Venezuela

Experts survey the international law issues of Operation Absolute Resolve.
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