The idea of a wider approach to transatlantic relations, emphasizing the place of the southern Atlantic and the importance of North-South ties is not new. It is rooted in the long history of Atlantic affairs. In recent years the “Atlantic Basin” approach has enjoyed a renaissance, but the context for the intellectual debate and the policy implications have evolved substantially. Under current conditions, the logic of rethinking Atlantic geopolitics is no less compelling in a far more challenging strategic environment. This analysis explores this evolving Atlantic scene and the potential for, and obstacles to, a wider Atlantic approach.