Quote of the Day: War Doesn’t Work Very Well

From John Quiggin:

If we started any analysis of international relations with the assumption that war will end badly for all concerned, and that the threat of war will probably lead to war sooner or later, we would be right most of the time.

Any foreign policy types care to weigh in on this? Over, say, the last 50 years, how often would you say that U.S. wars have achieved their desired outcomes?