I don't understand what you're getting at. You're not saying in effect Israel is just an extension of the US empire, so an attack on Israel is an attack on the US, right?
I think Hitchens is just making an obvious point. Hamas and Hezbollah have not attacked the US repeatedly as Al Queda has, so the US and UK are not going to send in troops to "smoke them out of their caves." Bush has apparently put a crimp in Hamas's fundraising, however.
Peter