I don't think turning the other cheek is appropriate when so many civilian casualties are inflicted, something HAD to be done. It's just like having multiple predators in the same area, allowing something like that to go will only show the others that you are weak and open to attack, which is not acceptable. None of that even includes the general populace's demands for revenge.

The response should have been limited strictly to those responsible for the attack though, instead of using it as an excuse to go rearrange some peoples' countries for them.