NATO

Highlights:

A local resident walks past billboards with the slogans "Key to Peace," "Key to Security," and "Shared Future in Peace", displayed along the boulevard on the protocol route ahead of the NATO Summit in Ankara, on 26 June 2026.

Will Trump Take the Win at NATO’s Ankara Summit?

It is an open question whether the Trump administration seeks to rebalance NATO or disengage the U.S. from European security.
(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.  
Image of a globe focused on East Europe and parts of western Russia.

Ukrainian Drone Incursions into Baltic States, Russian Electronic Warfare Countermeasures, and International Law

Experts unpack the international law implications of recent incursions of Ukrainian drones into the airspace of Baltic countries due to Russian electronic warfare tactics.
French President Macron (seated on left), European Commission President von der Leyen (standing center), and European Council President Antonio Costa (seated right) interact as three men stand behind them. Macron, his hands clasped at his chin, is listening to von der Leyen and Costa.

The Transatlantic Dilemma: How to Pursue Autonomy Without Foreclosing Future Cooperation

Transatlantic relations are unraveling as U.S.-Europe tensions deepen over Ukraine, Iran, and NATO, risking a long-term shift from cooperation to strategic rivalry.
​Wide-angle view of a large circular conference room, under a multicolored checkerboard ceiling and matching multicolored carpet. Ukrainian President Volodymyr Zelenskyy appears on a screen speaking to EU leaders, while leaders sit around the circular conference table. Hungarian Prime Minister Viktor Orbán leans over a table, watching the roundtable from the back of the room.

The Unraveling of the North Atlantic Bargain

As U.S. security commitments to Europe grow conditional, it is clear the old relationship is not recoverable. The question is what Europeans build in its place, and how fast.
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.
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86 Articles
EU and Ukrainian flags fly in the wind in front of the Berlaymont, the EU Commission headquarter for the 4th year anniversary of the full scale invasion of Ukraine by Russia, on February 23, 2025 in Brussels, Belgium. (Photo by Thierry Monasse/Getty Images)

Toward A Just and Lawful Peace in Ukraine: Part II

As the war in Ukraine continues to unfold, international lawyers must keep insisting that law be injected into diplomacy and accountability into power politics.
Ukrainian President Volodymyr Zelenskyy speaks at the Diplomatic Conference for the Adoption of the Convention Establishing a Special Tribunal for the Crimes of Aggression Against Ukraine at the Hague on December 16, 2025 (via Council of Europe Media Gallery)

Toward A Just and Lawful Peace in Ukraine: Part I

A review of what law and lawyers have contributed toward the goal of a just and lawful peace in Ukraine over the past four years.
A man in a red, navy and white plaid shirt sits at a table constructing an electronic device in what appears to be a makeshift workroom.

Ukraine’s Long War and History’s Lessons for the West

Russia’s long war on Ukraine is a world-shaping conflict, and only sustained U.S. and European pressure can secure the continent's future and the global order.
Bosnian factory workers stand along a brightly lit wooden furniture production line, guiding smooth timber panels through large industrial machines inside a spacious workshop.

Investment, Not Aid: A Chance to Reset U.S.-Bosnia Relations?

Can Bosnia's leaders advance U.S.-backed investments to strengthen its democratic future in the face of a separatist's growing influence in Washington?
Denmark's Veterans hold Denmark and Greenland's flags.

Greenland Post-Davos: Enforcing 22 USC 1928f to Save NATO and Contain Trump’s Lawless Foreign Policy

In his threats against Greenland, President Trump has violated the U.N. Charter, the North Atlantic Treaty, and Section 1928f, prompting Congress to take swift action.
A protestor holds a sign outside the Ronald Reagan Building in Washington D.C. that reads “Wreck USAID = Hurt U.S. + Help U.S. Enemies”

“America Alone” Runs Counter to U.S. Public’s Preferences for Robust Global Engagement

The Trump administration's withdrawal from dozens of international structures contradicts polls showing Americans broadly support multilateralism, alliances, and human rights.
A smartphone displays a post by U.S. President Donald Trump on the Truth Social platform showing a composite image featuring Trump alongside U.S. Secretary of State Marco Rubio and U.S. Vice President J.D. Vance, with the U.S. flag and a sign reading Greenland, U.S. Territory Est. 2026, while a map of Greenland is visible in the background, on January 20, 2026 (Photo illustration by Cheng Xin/Getty Images)

The Insurmountable Legal Obstacles to U.S. Acquisition of Greenland

Any acquisition of Greenland by the United States–whether by force or through coerced agreement–would directly violate fundamental principles of international law.
Screenshot of the Hypothetical Legal Review of Use of the U.S. Military in Greenland (Just Security)

Hypothetical Legal Review of Use of the U.S. Military in Greenland

This hypothetical legal review imagines what a senior judge advocate’s legal analysis would be if ordered to plan a U.S. military operation in Greenland without Denmark's consent.
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 image shows multiple buildings, most of them non-residential, in white and red around a snowy hillside, with what appear to be cell phone and perhaps other types of steel towers and a radar atop the hill in the background.

Trump Is Right About Greenland — Wrong About How to Secure It

The challenge is not recognition of Greenland’s importance; it is ensuring that security enhancements are strategic, sustainable, and allied-driven.
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.
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.
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