who lives in yemen joins us. you can talk about what's happening on the ground. earlier we heard white house press secretary josh earnst annot sure if this is isis. now we know it is isis. sunni vs. shia, can you tell us what's happening on the ground between these jihadi factions? >> basically isis wants to outdo al qaeda. they want to be seen in the jihadist community as at the forefront, at the vanguard of attacks and carnage. they are able to it do this with the latest attack in yemen. remember, the attack had about 137 casualties, the largest al qaeda attack in yemen had about 52 casualties. and then they apologized for that al qaeda tried to have a soft touch. blood thirsty and wants to show off jihadist rival. >> they're competing with