" Some argue that the use of drones violates international law. If you oppose their use on that basis, then you must also oppose the manned attack that killed Osama bin Laden, an assault that also violated Pakistan’s territorial integrity. In that case, you value the sanctity of Pakistani airspace more than the opportunity to kill the world’s most accomplished terrorist. That’s a legitimate moral position. But leaders faced with imminent threats must often choose among options that are terrible each in its own way, and it is immoral to ignore that reality. It is also immoral to condemn a leader’s choice without offering an honest, well-considered alternative. "

― Ian Bremmer , Superpower: Three Choices for America's Role in the World