Yea, duh... There was the war in Iraq, and there is the larger war against Islamic Jihadists. The two are tied because 1, Iraq supported the Jihadists, and 2, the Jihadists have followed us into that battlefield. The Iraqis may be capable of keeping out the Jihadists if they were forced to, but is that in our interest? Do you think the Jihadists will just go back home and play their Playstation because we leave? Osama said himself he was emboldened to attack mainland US because we left Mogadishu when things 'got tough'.. if that emboldened him, imagine what our leaving Iraq now would do?
Are these Jihadist you speak of in Iraq, Iraqis? Or are they from Iran? And if they are from outside of Iraq, why are not the Iraqis protecting their borders after we did all the heavy work?