About

The Transatlantic Security Initiative’s mission is to contribute to a strong and resilient transatlantic relationship that is prepared to deter and defend, succeed in strategic competition, and harness emerging capabilities to address future threats and opportunities. This mission endures across changing political dynamics on both sides of the Atlantic and in the face of new and evolving threats.

TSI advances the interests and values of the United States and its transatlantic allies and partners through the Atlantic Council’s convening power, our cutting-edge research and substantive expertise, and through our extensive and influential network across the transatlantic community. We work in partnership with governments, the private sector, think tank community, academia and others. We hold expert public and private convenings, conduct research, organize study trips, and produce publications, commentary and analysis to shape and influence policy and debate on the biggest challenges facing the transatlantic relationship. Intellectual independence is a cornerstone of our work at all times.

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The Scowcroft Center for Strategy and Security works to develop sustainable, nonpartisan strategies to address the most important security challenges facing the United States and the world.

Content

New Atlanticist

Jun 4, 2025

The UK Strategic Defence Review lays out an ambitious roadmap for reform. Will the government deliver?

By AM Sir Christopher Harper, KBE, RAF (Ret.)

The review is a positive step toward revitalizing the United Kingdom’s defense posture, but its success will depend on funding and follow-through.

Conflict
Defense Industry
British Army soldiers during Steadfast Dart 25, the Allied Reaction Force’s first large-scale exercise, in Romania on February 17, 2025. North Atlantic Treaty Organization (NATO)/Flickr, https://www.flickr.com/photos/nato/54354207050/in/album-72177720324100561.

Issue Brief

Jun 2, 2025

For NATO in 2027, European leadership will be key to deterrence against Russia

By Scott Lee, Andrew Michta, Peter Jones, and Lisa Bembenick

NATO lacks the operational integration, logistics, and joint force capabilities needed to quickly counter Russian mass and tempo near its borders. With the United States increasingly focused elsewhere, how can the Alliance retain military superiority in 2027 without overreliance on US military might?

Defense Policy
Europe & Eurasia

New Atlanticist

May 30, 2025

How NATO’s eastern flank is setting the standard for collective defense

By Justina Budginaite-Froehly

NATO's eastern flank countries have shown that regional coordination can transform vulnerabilities into strategic assets that enhance deterrence and operational readiness.

Central Europe
Defense Industry

Issue Brief

May 30, 2025

The frontier is the front line: On climate resilience for infrastructure and supplies in Canada’s Arctic

By Jeffrey Reynolds, Kristen Taylor

The front lines of strategic competition now run through the Arctic. Ottawa must do more to enhance its military readiness and infrastructure preparedness in the region.

Climate Change & Climate Action
Defense Policy

New Atlanticist

May 22, 2025

The case for a Three Seas Defense Innovation Hub

By Justina Budginaite-Froehly

Because of increasing threats to critical energy, transport, and digital infrastructure, the Three Seas Initiative should add defense innovation as another pillar of its mission.

Central Europe
Eastern Europe

Fast Thinking

May 18, 2025

Why Romania chose centrism in the end

By Atlantic Council

Following Bucharest Mayor Nicusor Dan's election win, our experts give their takes on what to expect next for Romania and for the country's relations with the world.

Corruption
Eastern Europe

Feature

May 13, 2025

Budginaite-Froehly in Wall Street Journal discussing Rail Baltica

By Justina Budginaite-Froehly

Transatlantic Security Initiative and Europe Center nonresident senior fellow, Justina Budginaite-Froehly, appeared in the Wall Street Journal to discuss how Europe’s strategic $27 billion railway project is addressing NATO concerns about Russian aggression in Europe.

NATO
Non-Traditional Threats

New Atlanticist

May 7, 2025

Lessons from Latvia’s efforts to keep essential services running during a crisis

By Mārcis Balodis and Marta Kepe

Latvia has shifted its crisis-management thinking from a focus on infrastructure protection to an emphasis on continuity of essential services and functions.

Crisis Management
Europe & Eurasia

New Atlanticist

May 6, 2025

Is China or Russia the bigger threat to the United States? There’s a clear answer.

By Richard D. Hooker, Jr.

The Trump administration’s apparent “China first” approach risks underappreciating the threat from Moscow and overestimating the current threat from Beijing.

China
Russia

New Atlanticist

May 5, 2025

What’s the best way to deal with Russian information manipulation? Latvia has answers.

By Elīna Vrobļevska and Beniamino Irdi

By combining policy tools, public education, media support, active debunking, and international partnerships, Latvia has built a layered defense.

Disinformation
Europe & Eurasia