That's a ludicrous "fact-check"
A prolonged US troop presence in Iraq would never be anything remotely resembling peace-keeping. Equating such a long-term committment to our post-war presence in South Korea or Japan is such a gross distortion of historical, cultural, religious and military circumstances and context that it's laughable. Or it would be if it weren't so tragic.
As long as US soldiers are in Iraq, the unfortunate truth is that many enemies, Iraqi and foreign, harbor such intense hatred of them, and possess such fanatical drive, that they will try to kill them, by any means possible including suicide attacks...