but there are sympathizers among the tribesmen, al qaeda sympathizers, so there's a risk some of these guns will end up in the wrong hands but it's a risk that the u.s. is willing to take. >> pelley: by why take that risk? why the urgency now? >> all western diplomats agree situation in anbar is a powder keg. one misstep on either side could be a botched military assault, maybe a high-profile assassination and a widespread sectarian and ethnic civil war could be ignited in a moment, scott. >> reporter: liz palmer in baghdad for us. liz, thank you. the same battle between the two main branches of islam is raging right next door in syria and today secretary of state john kerry urged syrian rebels to join peace talks next week in switzerland. that won't be easy because various rebel groups fighting to overthrow the syrian government are also fighting