U.S. and European allies attacked Col. Moammar Gadhafi’s forces by air and sea throughout the weekend. The allies also instituted a no-fly zone over Libya, allowing rebel forces to strengthen their hold on the eastern city of Benghazi. But the long-term implications of American military intervention are unclear. Although the Obama administration has called for Gadhafi’s ouster, the U.N. Resolution that authorized intervention did not. And the U.S. is already fighting two wars. How long will the conflict in Libya last? To investigate these questions is Sam Gardiner, a retired Air Force colonel who has taught strategy and military operations at the National War College.