The post-World War II order of an Atlantic West based on common values emerged from a complex, conflict-ridden Atlantic history and established itself as a powerful actor in world politics. This volume critically addresses the topics, processes, and problems of transatlantic relations from a multi-disciplinary angle, and marked by a worldwide pandemic. It thematizes the political, economic, and cultural dimensions from the seventeenth century to today and reflects them in categories of order and disorder, cooperation and conflict, convergence and divergence to get a deeper understanding of the present critical state of transatlanticism: the American retrenchment and the vanishing American vision of ‘world leadership’ in terms of ‘America First’ politics, the respective consequences impacting on the political and military development of the NATO alliance, and the Euro-American relations.