Probably you could.

From my observation of the Arab world (which includes travelling there for work fairly extensively in the last few years) has been that a) these crazy stories do exist and b) the majority don't believe them outright, but shrug their shoulders at the suggestion.

As you said the subject is complex; ask a "standard" person on the street about the stories and they would probably know what you were on about. Ask if they believe it could be true a decent portion might say "maybe, who knows!".

But you could be stood on a US street and talking about 9/11 conspiracy theory. Or a UK street and talking about whether the French smell perpetually of onions (deliberately picking two ends of the scale there).

The key problem is you get a set of stories from the absurd to the quite reasonable; and you mix it with an already existing resentment. That leaves you with people who don't simply laugh at the absurd, and instead just shrug.

As to whether you could sell these stories to people; of course you can. The media, and other aspects of society, sell absurd stories to ourselves every day. Facebook has been abuzz at least three (distinct) times, to my recollection, about the fact that FB were going to start charging for access. People genuinely outraged about this development were raging about it.

Chain letters.

I also travel a lot in the US and in certain areas you see equally absurd stories about all sorts of different classes of people. Go back over history and it is even worse; we still get absurd stories about homosexuals. A little further and black people got the same treatment. Perhaps the stories we see here are not so openly absurd to us as "Iran releases killer sharks" - but if you dig into the story you example it is built on a perfectly plausible basis.

There is even a wholly relevant very-recent example; Jews and Money. That is still sold to people with alarming regularity.

I know a perfectly lovely, middle class, suburban housewife[1] who, on finding out one of my friends was gay, asked me if it was because he had been abused as a child. She is quite convinced that homosexuality is commonly the result of childhood abuse (safe to say; that one floored me :S).

1. No, not like that!

My point was people are every where the same. Jews or other wise. The problem exists because of massive trust deficit due to a long chain of history of events. We need tolerance from both the parties if they want to leave in peace. And lets hope they are sensible enough to realize that.

I am great admirer of all cultures. I would love to visit Israel some day learn and experience Jewish culture to the fullest