Why the US must stay in Iraq

This is a horrible story of cruelty, and the break down of law and order.  It's enough to make you sick, that people can act this way.  (h/t David Frum)

 

How much worse would it be if the US left suddenly?  Regardless of whether or not they should have invaded or how many mistakes they've made so far, we should all be able to agree that until Iraq gets on its feet and is able to maintain some semblance of law and order, the international community must stay.