Since the start of the Ukraine crisis, the Baltic States have come into sharp focus as a key friction zone between a much more assertive Russia on the one hand, and the United States, NATO, and the broader transatlantic community on the other. NATO and the United States have made promising first steps to better secure the Baltic States and the surrounding region. But meeting the challenge of an assertive Russia under Vladimir Putin will require a long-term strategy by NATO, and the United States in particular. In this piece, the Atlantic Council’s Damon Wilson and Magnus Nordenman argue that a coherent strategy for the region must be built on a clear vision, a determined force posture, regional cooperation, and a focused program—supported by resources from across the Alliance—to build Baltic deterrent capabilities. These efforts, backed by strong US leadership, will ensure northeast Europe remains stable, secure, and prosperous.