QUOTE : I’ve written elsewhere in detail on the intellectual history of counterinsurgency, and on various critiques of the theory.120 For now, though, it’s enough to note that there is solid evidence that counterinsurgency, or COIN, can work if done properly, with sufficient resources, for long enough.121 But it’s also clear that COIN is not the answer to every question. Likewise, counterterrorism (ranging from the comprehensive “global war on terrorism” of President George W. Bush’s administration to President Obama’s unrestrained drone warfare) can help to temporarily suppress a particular type of threat, but it can’t do much about the broad and complex range of challenges we’re about to face. In fact, any theory of conflict that’s organized around dealing with a single type of enemy is unlikely to be very helpful in a conflict environment that includes multiple overlapping threats and challenges.