With all due respect AC, I disagree with you.
If we removed our support from Israel because it is an "unstable nation" all we would really be doing is giving a wink and a nod to Israels hostile neighbors to swarm in and murder or enslave every single Jewish person in that country.
Israel doesn't rely on U.S. financial aid and military assistance for its survival as a nation. It relies on these things because it can't maintain itself as a modern European-style socialist state without them.
With all due respect, U.S. taxpayers have no obligation to maintain any other nation's utopian economic delusions.