Doesn't some of this come from the unique place Israel has in this world and especially the US? Open citizenship for any Jew from anywhere, self-characterization of being a "homeland", etc.? It's interesting to note that joining a "foreign" military is a simple way to get your US citizenship/passport revoked, unless of course that military is Israeli. Dual citizenship, ordinarily a big no-no in the US, is tolerated for Israel.
I'm not a big an of nationalism, but Israel certainly has a niche cut out that's real and identifiable.
Plus, it's a perfect conspiracy theory: if it *were* true, you'd expect people like Gore Vidal to a) know and b) say so and people like Katha Pollitt to a) know and b) deny it.
:-)
/mulder