[nailer]

Worth reading. An excerpt:

It appeared as though Obama had drawn the conclusion that damage to American credibility in one region of the world would bleed into others, and that U.S. deterrent credibility was indeed at stake in Syria. Assad, it seemed, had succeeded in pushing the president to a place he never thought he would have to go. Obama generally believes that the Washington foreign-policy establishment, which he secretly disdains, makes a fetish of “credibility”—particularly the sort of credibility purchased with force. The preservation of credibility, he says, led to Vietnam. Within the White House, Obama would argue that “dropping bombs on someone to prove that you’re willing to drop bombs on someone is just about the worst reason to use force.”

American national-security credibility, as it is conventionally understood in the Pentagon, the State Department, and the cluster of think tanks headquartered within walking distance of the White House, is an intangible yet potent force—one that, when properly nurtured, keeps America’s friends feeling secure and keeps the international order stable.
http://www.theatlantic.com/magazine/...ctrine/471525/