NYTimes.com By C. J. CHIVERSUmar S. Israilov saw the men who had come to kill him. They confronted him in the neighborhood where he lived in hiding in Vienna. He must have sensed their intentions, because he ran.For more than two years, Mr. Israilov, a Chechen in exile, had formally accused Russia’s government of allowing a macabre pattern of crimes in Chechnya. Even by the dark norms of violence in the Caucasus, his accusations were extraordinary.A rebel fighter turned bodyguard of Ramzan A. Ka
