As it happens, drone strikes and other Obama war decisions can be legally and morally justified. The problem, however, is that they are hard to justify based on the principles Mr. (Harold) Koh so loudly advanced before he joined the Obama administration. The legal contortions Mr. Koh introduces in his defenses today as much as admit that.
It is eminently possible that a war might look one way from Yale and another way from Foggy Bottom. A public servant facing that reality has two honorable choices. If he found himself embracing authority he had once denounced others for defending, he would apologize to them. If he still believed his original positions, he would resign.
An honest man might at least acknowledge the contradiction. – William McGurn