Several factors have contributed to make transatlantic relations looser: the end of the Cold War and its threats, the strengthening of US power and changes in American foreign policy under George W. Bush, the progress made in the building of the European Union. A new partnership has to be founded on new bases; the United States should give support to the constitution of a strong European Union, especially in the field of foreign policy.

Charles A. Kupchan teaches international politics at Georgetown University and is a Senior Fellow at the Council on Foreign Relations. Translated from the English by Elsa Paroissien.

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