NATO

The Europe, Russia, and Eurasia Program studies the crucial transatlantic security relationship and its broader implications.

Photo: OLEKSII FILIPPOV/AFP via Getty Images

Photo: OLEKSII FILIPPOV/AFP via Getty Images

How to Secure the Black Sea During a Russia-Ukrainian Ceasefire

Securing a fragile Black Sea ceasefire demands more than diplomacy. NATO must field a multidomain fleet-in-being—one that deters Russia, respects Montreux limits, and projects power without draining overstretched naval forces elsewhere.

Commentary by Benjamin Jensen and Mark Montgomery — March 31, 2025

See all analysis on NATO

Latest Podcast Episodes

See all podcast episodes on NATO

Recent Events

See all events on NATO

Related Programs

Experts

Max Bergmann

Max Bergmann

Director, Europe, Russia, and Eurasia Program and Stuart Center
Seth G. Jones

Seth G. Jones

President, Defense and Security Department; Harold Brown Chair
Kathleen Mcinnis

Kathleen McInnis

Director, Smart Women, Smart Power Initiative and Senior Fellow, Defense and Security Department
Benjamin Jensen

Benjamin Jensen

Director, Futures Lab, and Senior Fellow, Defense and Security Department
Yasir Atalan

Yasir Atalan

Data Fellow, Futures Lab, Defense and Security Department

All NATO Content

Filter by

1 - 10 of 442 results

How to Secure the Black Sea During a Russia-Ukrainian Ceasefire

Securing a fragile Black Sea ceasefire demands more than diplomacy. NATO must field a multidomain fleet-in-being—one that deters Russia, respects Montreux limits, and projects power without draining overstretched naval forces elsewhere.

Commentary by Benjamin Jensen and Mark Montgomery — March 31, 2025

How to Defend Ukraine’s Skies During Peace Negotiations

How many aircraft are needed to secure Ukraine’s airspace during a ceasefire? As history shows, deterrence requires strength. This analysis examines the force posture necessary to uphold stability and prevent Russian provocation.

Commentary by Benjamin Jensen, Mark Montgomery, and Jose M. Macias III — March 7, 2025

Can France and the United Kingdom Replace the U.S. Nuclear Umbrella?

As doubts grow over U.S. nuclear commitments, Germany’s new chancellor has sparked debate on whether France and the United Kingdom could provide a European nuclear umbrella. But with strategic and doctrinal hurdles ahead, is Europe ready to reshape its nuclear deterrence?

Critical Questions by Astrid Chevreuil and Doreen Horschig — March 4, 2025

Beyond Appeasement: What is Feasible for Ukraine

Accepting Russian conditions is not justified by the current situation in Ukraine. Instead, sustained Western assistance to Kyiv has strong prospects of securing a stalemate that protects European security and advances Ukraine’s goal of joining the European Union.

Commentary by Maria Snegovaya and Max Bergmann — February 27, 2025

Guarding the Frontier: Options for a Post-Conflict Security Force in Ukraine

Any lasting peace in Ukraine demands more than ceasefire monitors—it requires a powerful international force capable of deterring aggression, securing vast borders, and integrating Ukraine into the transatlantic security framework. Anything less risks failure.

Commentary by Benjamin Jensen — February 26, 2025

The War in Ukraine Three Years On

Please join the CSIS Europe, Russia, and Eurasia Program for an event marking three years since the launch of Russia's full-scale invasion of Ukraine.

Event — February 20, 2025

NATO Must Respond to the Russian Nuclear Threat in Space

The United States must reestablish a credible nuclear deterrence in space by building on the same foundation of deterrence that successfully prevented the use of nuclear weapons for nearly eight decades: the United States’ unmatched network of alliances.

Commentary by Todd Harrison — October 31, 2024