No, we didn't lose in Iraq

Even so, Iran’s Islamic Republic regime won’t benefit nearly as much from our withdrawal today as it would have five years ago. Iraq was an absolute disaster in 2006. Before General David Petraeus “surged” thousands of additional counterinsurgency troops to the country, a hurricane of car- and suicide-bombers turned Iraq into the most terrorized place on the face of the earth. Abu Musab al-Zarqawi’s Al Qaeda in Iraq lorded over Ramadi, the capital of Anbar Province, and points beyond. Moqtada al Sadr’s radical Shia Mahdi Army militia had its own Hezbollah-style state-within-a-state with its capital in Sadr City, a vast slum in Baghdad that’s home to millions of people.

If the United States had withdrawn its forces then, as many commentators and policymakers demanded, the Iraqi government almost certainly would have disintegrated. Iraq might not even exist as a state anymore. Al Qaeda could have claimed it beat the United States Marine Corps in a shooting war—a feat far more impressive for the purposes of propaganda than even the killing of thousands of civilians in New York and Washington. Iran, meanwhile, could have successfully replicated the quasi-imperial foreign policy it all but perfected in Lebanon where it acquired its own private army—Hezbollah—during a chaotic time of sectarian civil war and foreign occupation…

Iraq just isn’t as dangerous anymore, not to itself and not to others. If Iran tries to destabilize it with terror militias again, Iraq will fight back. And the Iraqis know how to fight back effectively now after so many years of American training. If Iran actually tries to invade with conventional forces—a spectacularly unlikely event, but one never knows in that part of the world—odds are excellent that the American military would respond to the breach of international law and sovereignty by again joining the fight alongside the Iraqi military.