You want Iraq hypotheticals? Here’s one.

Mme. Secretary: When you arrived at State, al-Qaeda in Iraq had been crushed and expelled from Anbar. The Iraqi government had from Basra to Sadr City fought and defeated the radical, Iranian-proxy Shiite militias. Yet today these militias are back, once again dominating Baghdad. On your watch, we gave up our position as the dominant influence over a “sovereign, stable and self-reliant Iraq” — forfeiting that position gratuitously to Iran. Was that not a mistake? And where were you when it was made?

Iraq is now a battlefield between the Sunni jihadists of the Islamic State and the Shiite jihadists of Iran’s Islamic Republic. There is no viable center. We abandoned it. The Obama administration’s unilateral pullout created a vacuum for the entry of the worst of the worst.

And the damage was self-inflicted. The current situation in Iraq, says David Petraeus, “is tragic foremost because it didn’t have to turn out this way. The hard-earned progress of the surge was sustained for over three years.”

Do the math. That’s 2009 through 2011, the first three Obama years. And then came the unraveling. When? The last U.S. troops left Iraq on Dec. 18, 2011.