Existence of Israel is fulfillment of Biblical prophesies

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And which would be obliterated by the numerous enemies surrounding it if other nations were to stop propping it up.

Uh, no. Can you say 7 Day War & Air Force second only to the USA in training & equipment. Israel is bloodthirsty & their next serious aggressor will more than likely be nuked out of existence.

Nuke your neighbors? That's a wise idea

Consider their population and economic disadvantages, as well as the apparent fact that (at least some of) their opponents appear willing to commit suicide taking them out. Also consider precisely how many people will be infuriated by such an attack... and that many of the islamic states would band together to reciprocate, as is justice in much of that part of the world. Such an attack would also shatter much of Israel's diplomacy in european countries (and even the US). Israel stands to lose a great deal if it should attempt to have an enemy 'nuked out of existence'.

You also appear to suggest that soldier training and their equipment make them invincible when faced with foes who have far less training and improvised equipment. While I agree that their soldiers are adequate at battling their current foes... they hardly suffer no losses. If Israel overreaches what it can handle, it will be dogpiled as many foes vie to bite off Israel's outstretched arm(s)... leading to numerous bite wounds, scratches, and bruises that Israel won't enjoy one bit, and which may be crippling in more ways than physical.

Bloodthirsty empires may lay the smack down on someone... but in doing so, they leave themselves weaker, and a third party might roll in and 'clean them up'.