It is beyond belief that Berg was a US Spy. He was Jewish in an Arab land. These people know one another, very well, after centuries of living near one another, the Sunnis know the Shiites from the Kurds etc. Just as most American Indians, raised, living with other Indians know one tribe from another. No, I doubt he was a spy, he was an adventurer.
Betcha there's a gay component to this misadventure.
I do think Berg was a SPY...but I think he worked for Michael Moore and against the US.