The third volume of the Transatlantic Public Policy Series contains papers prepared by members of the Transatlantic Policy Consortium (TPC), representing American and European universities and institutions. The 13 contributions focus on the future of NATO, the possibilities of transatlantic cooperation in the Middle East problems, and the challenges to human security. The collection serves as an illustration of the state of the debate on security problems in transatlantic relations at this specific time. It will contribute to greater synergies of thinking and studies of global security pursued in American and European institutions.