Well, oil was certainly part of the perfect storm of motivations the led to the Iraq and Afghanistan invasions, but you can't discount the fact that the neo-cons driving the Bush policy (and opposing negotiations with Iran now) wanted to get rid of governments they considered a threat to Israel.
It seems to me that you're responding seriously on issues here. Don't be so quick to assume that opposition to Israel's policies and impact on U.S. politics is based on a hatred of Jews. That's been a really contentious issue here and was a large part of the reason the comments system was changed.
I don't know if you were around for last year's brouhaha about our rabidly anti-Semitic poster who turned out to be a Jewish grad student using several identities to make it look as if the commenters here were anti-Semitic, but it left a bad taste in everyone's mouth and poisoned the discourse on the issue. If you enter the cd website URL, followed by /hambaconeggs you can read about it.
I, thinking hambaconeggs was a real bigot (unlike a few of our more astute commenters), often chided him for his actual anti-Semitic quotes, and was then attacked by his other personas, and a few actual commenters and someone else's fake persona, who thought that my responses to hambaconeggs were proof I was a Zionist.
So I'm in the unique position of being accused of being both anti-Semitic for my opposition to Israel's policies and influence on the U.S. government, and also of being a Zionist because I oppose actual anti-Semitism.
The point being the knee-jerk response of anti-Semitism to comments about Israel and the U.S. relationship with Israel is just going to undermine your credibility. Certainly some criticism of Israel comes from people who are anti-Semitic, but a lot of it comes from those of us who once supported Israel but saw too many news reports about settlement announcements just prior to 'peace' negotiations and innocent Palestinians slaughtered for the crime of being on land Israel wants.