ATHENS, Greece - The same day Dutch mourners gathered outside a crematorium for a final goodbye to slain filmmaker Theo Van Gogh, police on the other side of the world made a horrific discovery in a hut: the decapitated body of a Thai laborer. The two events - in settings as different as tidy and prosperous Holland and a tropical rubber plantation in southern Thailand - bear similarities that suggest new flash points in the global struggle against radical Islam. A note impaled on Van Gogh's body by the alleged Muslim killer threatened further attacks against Dutch politicians in the...