Geopolitics and International Security

CSIS experts utilize deep expertise and global relationships to help policymakers in navigate the evolving challenges to U.S. global leadership. Their work examines the key political, economic, security, and societal trends shaping the future of global governance and institutions.

Photo: FADEL SENNA/AFP/Getty Images

Photo: FADEL SENNA/AFP/Getty Images

Chokepoint: How the War with Iran Threatens Global Food Security

The war with Iran has effectively closed the Strait of Hormuz, a critical chokepoint in global oil, natural gas, and fertilizer trade. CSIS experts examine the immediate impacts on farmers and markets—and the long-term risks to food security if shipping does not resume.

Critical Questions by Emma Curtis, Joely Virzi, and Caitlin Welsh — March 11, 2026

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Experts

Victor Cha

Victor Cha

President, Geopolitics and Foreign Policy Department and Korea Chair
Jon Alterman

Jon B. Alterman

Zbigniew Brzezinski Chair in Global Security and Geostrategy
Seth G. Jones

Seth G. Jones

President, Defense and Security Department; Harold Brown Chair
Emily Harding

Emily Harding

Vice President, Defense and Security Department; Director, Intelligence, National Security, and Technology Program
Jerry McGinn

Jerry McGinn

Director, Center for the Industrial Base and Senior Fellow, Defense and Security Department
Clayton Swope

Clayton Swope

Deputy Director, Aerospace Security Project and Senior Fellow, Defense and Security Department
Max Bergmann

Max Bergmann

Director, Europe, Russia, and Eurasia Program and Stuart Center
Oge Onubogu

Oge Onubogu

Director and Senior Fellow, Africa Program
Andy Lim

Andy Lim

Deputy Director and Fellow, Korea Chair
Ilaria Mazzocco

Ilaria Mazzocco

Deputy Director and Senior Fellow, Trustee Chair in Chinese Business and Economics
Joseph Rodgers

Joseph Rodgers

Deputy Director and Fellow, Project on Nuclear Issues
Thibault Denamiel

Thibault Denamiel

Fellow, Economics Program and Scholl Chair in International Business
Joel Coito

Joel Coito

Military Fellow, Defense and Security Department

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Russia-Ukraine War in 10 Charts

Four years after Russia’s full-scale invasion, the war in Ukraine has reshaped European security, global markets, and the balance of power. These 10 charts break down the battlefield, economic strain, military aid shifts, reconstruction costs, and what comes next.

Commentary by Seth G. Jones, Riley McCabe, Yasir Atalan, Benjamin Jensen, Romina Bandura, Emma Curtis, Caitlin Welsh, Otto Svendsen, Max Bergmann, Mark F. Cancian, and Chris H. Park — February 24, 2026

The Purges Within China’s Military Are Even Deeper Than You Think

This CSIS China Power report is based on a groundbreaking dataset of Chinese military purges since 2022. The report sheds light on the unprecedented scope and reach of these purges and their implications for the PLA’s present and future.

Commentary by Bonny Lin, Brian Hart, Leon Li, Suyash Desai, Truly Tinsley, Linda Yang, and Feifei Hung — February 24, 2026

The Russia-Ukraine War and Global Food Security: Impacts Four Years Later

Russia’s war in Ukraine caused immediate and widespread disruptions to Ukraine’s agriculture sector and global food markets. Today, new patterns are emerging, affecting Ukraine’s agricultural recovery and Russia’s ability to use its food exports for political benefit.

Critical Questions by Caitlin Welsh, Emma Curtis, Joseph Glauber, Antonina Broyaka, and Vitalii Dankevych — February 24, 2026

State of Play: The Global Impact of the SCOTUS Decision on IEEPA Tariffs

On February 20, the U.S. Supreme Court declared President Donald Trump’s use of IEEPA to impose global tariffs against U.S. trading partners illegal. CSIS experts assess how governments and key sectors around the world are likely to interpret and react to the decision.

Commentary by Victor Cha, Nicholas Szechenyi, Oge Onubogu, Christopher Hernandez-Roy, Charles Edel, Scott Kennedy, Ilaria Mazzocco, Henrietta Levin, Bonny Lin, Federico Steinberg, Richard M. Rossow, Kristi Govella, Mona Yacoubian, and Gregory B. Poling — February 20, 2026

U.S. Military in the Middle East: Numbers Behind Trump’s Threats Against Iran

Eight months after Operation Midnight Hammer, the United States has again moved large air and naval forces to the Middle East. These can launch punitive strikes on Iran and protect U.S. allies and partners but lack the capability for ground operations, raids, or regime change.

Commentary by Mark F. Cancian and Chris H. Park — February 20, 2026

Pekingology

Can China Sway Australia?

Henrietta Levin is joined by Charlie Edel, Senior Adviser and Australia Chair at CSIS. Charlie unpacks China’s strategy towards Australia, an influential, democratic middle power that maintains strong economic ties to China and a security alliance with the United States. 

Podcast Episode by Henrietta Levin and Charles Edel — February 19, 2026

CSIS Pekingology
35 West

Best of 35 West: Derechos Humanos en Cuba / Human Rights in Cuba

In this Best of 35 West episode, Christopher Hernandez-Roy, Deputy Director and Senior Fellow with the Americas Program, sits down with Yaxys Cires, Director of Strategy at the Cuban Observatory of Human Rights to discuss the recent United Nations Human Rights Council Universal Periodic Review of Cuba.

Podcast Episode by Christopher Hernandez-Roy — February 19, 2026

CSIS 35 West