That raises the question: If not us, who will? Will we see Iranian operatives (Quds Force) going on the attack in Anbar? If so, will the Syrian and Iraqi civil wars merge? And are we looking eventually at one big war from Beirut to Peshawar?
Thomas E. Ricks covered the U.S. military from 1991 to 2008 for the Wall Street Journal and then the Washington Post. He can be reached at firstname.lastname@example.org.