Diplomacy

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The blue and yellow Ukrainian flag flies above the U.S. flag on the same flag pole, with two birds flying to the left against a whitish gray sky.

Ukraine’s Successes Make the Case for How Democracy Support Enhances U.S. National Security

Ukraine's survival in the face of Russia's aggression demonstrates how U.S. support to civil society and democratic institutions becomes a national security asset.
Officials sit around the iconic maple-colored wooden, horseshoe-shaped dias in the U.N. Security Council chamber, hands raised in a vote, as others seated behind them around the edges look on.

Reading the Signals of China’s U.N. Security Council Role in the Afghanistan Mission Renewal

China's prominent role in negotiations over the U.N. mission in Afghanistan marks a shift in its approach to Security Council diplomacy and illuminates its tactics.
US Secretary of State Marco Rubio (C, back) looks on as (L/R, front row) Israeli Ambassador to the US Yechiel Leiter, State Department Chief of Staff Daniel Holler, and Lebanese Ambassador to the US Nada Hamadeh sign a framework agreement at the US Department of State in Washington, DC, on June 26, 2026.

The Israel-Lebanon Framework Agreement: Return to the “Land for Peace”’ Formula

Experts examine the implications of the framework agreement signed by Israel, Lebanon, and the United States in June.

The Just Security Podcast: What Next at Int’l Criminal Court After the Prosecutor’s Removal?

Ryan Goodman speaks with Rebecca Hamilton and Alex Whiting on the vote to remove Karim Khan as the ICC's chief prosecutor.

Why the Dearth of Female Nominees for U.N. Secretary-General?

UN member states should expand the field of candidates for Secretary-General by nominating more women for the role.
The exterior of the headquarters of Radio Free Europe/Radio Liberty (RFERL) in Prague, Czech Republic, is a modern gray-slab building behind a tall black iron fence with the name of the news organization and its logo, a lighted torch. A building of older, classical architecture is at the left of the frame.

Authoritarians Keep Telling Us What They Fear. We Should Listen.

Research shows that, more than military strikes or sanctions, authoritarians fear support for independent media, anti-censorship tech, and civil society.
The International Criminal Court forecourt, entrance and sign.

The Future of the Int’l Criminal Court: What Follows After Removal of the Prosecutor

Analysis of the future of the International Criminal Court including selection of a new prosecutor.
In this picture obtained from Iran's ISNA news agency on June 18, 2026, vessels are seen anchored in Bandar Abbas along the Strait of Hormuz.

Expert Q&A: Decoding the Treasury Department’s Actions on Iran

How to understand the Treasury Department's sanctions relief for Iran's oil sector, its quick reversal, and what to look for going forward.
A red and white cargo ship at sea in the distance, with a yellow crane-like piece of equipment, presumably at the terminal, in the foreground.

Merchant Mariners: Unseen in Peacetime and Forgotten in Conflict

The U.S.-Israeli war with Iran illustrates how thousands of merchant mariners, so desperately needed globally, increasingly are trapped at sea during times of conflict.
Turkey's Minister of Environment, Urbanization and Climate Change Murat Kurum (C) speaks next to United Nations Climate Change Executive Secretary Simon Stiell (L) and COP30 President Andre Correa do Lago (R) during a conference in Istanbul on February 12, 2026, ahead of United Nations's COP31 climate conference in November.

W(h)ither Climate “Multilateralism”?

A former lead climate lawyer for the U.S. State Department offers her perspective on the future of multilateral initiatives to combat climate change.
The United Nations Security Council meets on the Middle East, at UN Headquarters in New York, on June 10, 2026.

A Path For Middle Powers and a Rules-Based International Order: A Functional Perspective

German scholars argue that from a realpolitik perspective, commitment to international law is essential for States whose power is limited.
(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.  
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