an internet kind of figure head in many ways over the past decade for much of the terrorist activity in and around russia but certainly things are so fractured here and so many of the extreme groups fragmented, like the crew we just talked about, extreme in their idealology. >> nick pay ton walsh on thestein for us in dagestan where the father of these two suspects remains. so the investigation into this boston bombing moves into high gear now and we're learning more about how prosecutors just might build a case against the surviving suspect. but what about the defense angle? we're digging deep into that when our special coverage of the newsroom continues. everybody has different investment objectives, ideas, goals, appetite for risk. you can't say 'one size fits all'. it doesn't. that's crazy. we're all totally different. ishares core.