For your information Israel wanted to participate in Gulf 1 but they were rejected as counterproductive to building a coalition. Israel was not happy about the exclusion.
Let me ask you this, how many US troops are stationed in Israel? How many in Europe? How many fought or were stationed to save Europe from WW1,WW2,USSR? And then ask whether the European contributions to Iraq and Afghanistan pay for US cost in blood and treasure.
Next ask yourself why the US under Pres Bush wanted to build a missile shield for Europe to protect against Iran nukes. Are you under the delusion that the only country threatened by Iran nukes is Israel?
No, I just don't see Israel as all that vital.