CNN CNN Newsroom With Carol Costello March 3, 2015 14:18:00
. thousands turning out for the funeral of a russian opposition leader. boris nemtsov was gunned down friday. his girlfriend is back in ukraine. she did not attend today's services. she's believed to be the only known witness to nemtsov's murder. nemtsov's killers still have not been caught, but one of the agencies investigating his murder says all scenarios are being considered that may include analyzing this new surveillance video of the presumed get away car. it shows the car making its way along the moscow streets. they released the video. cnn's senior international correspondent ivan wa...