The US has never 'needed' Israel. The USA found Israel useful as a counterpoise to the Soviet influence which the presence of Israel created. Both US parties have factions which are intensely pro-Israel. But the USA has never 'needed' Israel or the problems Israel creates for the USA. Rather the US has suffered for Israel actions and Israel's contempt for a nation which it sees as it's supplicant.
Turkish jets reportedly attack PKK targets in southeast Turkey (AP)
from the article: Israel must tread carefully during the Arab Spring