secretary of state colin powell and you can tweet george your suggestions for questions @gstephanopoulos. thanks again, george. >> thank you, george thanks, dan. >> let's turn to ronother news headlines and we'll begin overseas. >> good morning to you, paula and dan. good morning, everyone. >>> we do begin overseas with two of world's most brutal terrorist groups joining forces. the nigerian islamist group boko haram taking to twitter swearing allegiance to isis. abc's alex marquardt is live in london with more on that and what it means. alex. >> reporter: good morning, ron. that's right. two of the world's most chilling names in global terrorism coming together, boko haram's leader announcing in an audio message they are swearing allegiance to isis. this, of course, is a group that has kill ded thousands in their home country of nigeria and kidnapped those hundreds of schoolgirls last year. now, what this alliance actually means in practical terms has yet to be determined but boko haram now becomes the latest global isis franchise. its brutal ideology on the march around the world now extending all the way from libya and egypt to afghanistan and pakistan and only