First off, the number of people killed is way less than 40. Secondly, the government has apoligized. Thirdly, we even flew some of the injured to our hospitals. Fourthly, if we pulled out of Afghanistan right now, Karzi would be driven out of office and there would be a multi-sided civil war. Fifthly, if that civil war occured, many more civilians would have died. Everybody seems to forget that inaction has as much bearing on what happens as action does. Being inactive in this situation would be a much greater tragedy than being inactive.