Britexpat - erm... I think you might find that the USA does what it thinks is best for Israel. NOT its 'own people' actually...

And as for America and 'why should it help others'.. you're spot on - going on this line of thinking, they should cut their aid to Israel and stop this massacre immediately. Why help Israel? Oh sorry.. forgot they have to help them cos (and i quote Ariel Sharon here) :

"Every time we do something you tell me America will do this and will do that . . . I want to tell you something very clear: Don't worry about American pressure on Israel. We, the Jewish people, control America, and the Americans know it."

- Israeli Prime Minister, Ariel Sharon, October 3, 2001.