i'm paula newton at cnn center in atlanta. we continue to follow the news that isis leader abu bakr al baghdadi is believed to have been killed in the northwest province of idlib. that nighttime video that we're all looking at right now, was apparently shot by syrian activists, of a military operation, as it got under way near the turkish border. cnn cannot confirm that it was part of that raid targeting al baghdadi. a u.s. defense official tells cnn that al baghdadi apparently detonated a suicide vest, as