Probably, because government of the palastininans is directly funding suicide bombers going into israel?? Hamas has been doign that for years, and just got in control of the palastine government. They continuted their acts of terrorism against Israel.
Maybe, if Hamas didn't do kidnapping and murder , Israel would not react in the manner it did?
After all, isn't that what Bush did with Iraq (although we do know that Iraq did not have anything to do with 9/11, nor did it have functional WMD that could be launched in 45 minutes)