This report focuses on the decision-making process leading up to the military intervention in Libya in 2011. The report analyses whether there are any implications to be drawn for the EU's and NATO's future abilities to act militarily. Special attention is paid to the positions of some key NATO member states, including France, Germany, the United Kingdom and the United States. The analysis considers the period from the onset of the uprisings in Libya (February 17, 2011) until NATO decides to take full command of the military operations (March 31, 2011). The report identifies both new and existing trends in international relations, for example, with regard to the cohesion of international defence collaborations and the role of European member states visà- vis the US in future crises.