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.
Our pillars
NATO programming
TSI at the NATO Summit
2026 NATO Summit in Ankara
Amid a complex year for the Alliance, the Atlantic Council is leading the charge in shaping the agenda for the 2026 NATO Summit in Ankara, Turkey, informing the transatlantic community, and demonstrating NATO’s enduring value. Take a look at our footprint on the ground in Ankara as we look to operationalize the Alliance’s commitments to fortifying Euro-Atlantic security.
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Expert commentary & analysis
In-depth research & reports
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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.