Some said he was a Georgian, others that he was Jewish, or Arab. They said he'd served in Seal Team Six, he was Spetsnaz, he was former IDF, ex SBS, that he was a radical green activist, a former Jihadi gone global, a lone wolf, ex CIA. No one knew for sure. Whatever he was, they said, it was all bad, and everyone wanted him dead. But Mark Barrett knew who he was and what he really looked like, and he wasn't telling. Because he...