The disintegration of Iraq, the rise of ISIS, the civil war in Syria, the conflict between Israelis and Palestinians, the promise and peril of the Arab Spring.... The Middle East has long vexed the United States and challenged policy makers for generations. What role should America play in the region? For some, the nation's restraint has been a sign of disciplined leadership. But for others, it has been a sign of diminished strength and influence. How should the United States balance the competing demands of national interests, moral obligations, and the maintenance of world order? Should the United States pursue a bolder, more muscular policy in the Middle East? Or should it recognize the limits of military intervention and the danger of unanticipated consequences?