Overall & unfortunately we can't win the vast majority for numerous reasons, to reaching for the goal of tangible freedom in working toward a real republic.
While there are many Iraqi's sick and tired of the ex-Saddam killers, the Wahhabist psychopaths & Shi'ite armed madmen, but all it takes is one, just one determined, insane, brainwashed jihadist, regardless of the sect of Islam, strapped with enough explosives to inflict death & horrible injuries, and 10, 20, 50 or more Iraqis attempting to clean out their nation of these jihadic robots are massacred, and many more injured for life in more ways then one.
Even if we sufficiently train more then the required Iraqi military & civil police forces, if the rouge régimes in Damascus & Tehran are not toppled the Islamic terrorist plague will rapidly seize control of Baghdad, in similar to the way the North Vietnamese Red horde did when American forces evacuated from Saigon. It's not one rotten apple, the whole barrel is rotten in terms of the majority of Iraq's bordering states.
I find your comment difficult to swallow given that I observed (from afar) 1/3 of Iraq risk their lives to vote and have their fingers marked a distinct shade of purple.
Defeating evil is not easy.