Firstly what 'borders' are you referring too? Israel does 'not' have defined borders ie: the illegal settlements/occupation in the WB/Golan/Shebba/etc. Secondly you seem to forget about when Israel attacked Iraq, or Suez etc so don't pretend that you only 'defend the nation on our borders'. Thirdly, to answer your question: Both Israel and America are guilty of war crimes against people near and far. There is 'who is worse?' in this situation - both countries are just as bad in different ways.
Bin Laden's family killed in private plane crash in England, officials say (AP)
from the article: Trying to outsmart Obama