kremlin investigators, russian investigators have put out a number of possible motives behind the murder suggesting it could be linked to the war in neighboring ukraine. it could be linked to islamist extremists to perhaps business associates of nemtsov, or even domestic disputes. the one theory that they have not suggested is that maybe he was a target because of his outspoken, long-standing criticism of russian government policy and corruption and the war in neighboring ukraine. and that s part of why many supporters of boris nemtsov have come out and basically questioned the sincerity of the russian government when it promises and pledges to try to bring nemtsov s killers to justice. ivan thank you very much. we want to bring in gary gas par off, who considered nemtsov a friend. former world chess champion. first of all, i m so sorry for