After more than 60 years of being able to look to the U.S. to ensure its security — and two decades after the end of the Cold War — Europe still finds it hard to accept that it should take the lead in handling a crisis on its doorstep. Sarkozy and Cameron have been at the vanguard of the diplomatic and military efforts to stop Gaddafi, cajoling fellow European nations, Arab countries, and even Obama (according to some accounts) into action. But although France and Britain have Europe’s biggest militaries — and last November agreed an historic defense-cooperation treaty — they still rely on U.S. aircraft, missiles, intelligence and infrastructure to maintain the no-fly zone.