when it comes to incorporating sunni fighters into the battle. the u.s. would also expect to see from the iraqi leadership in this critical fight against isis. christine. >> jomana karadsheh, thanks for that. the defense secretary unexpected trip to baghdad this morning. thank you. isis is now a bigger threat to the u.s. than al qaeda because of the ability to inspire americans to commit acts of domestic violence. that is the assessment from james comey. admitting there is no way to know how many troubled americans have been influenced by isis during the social media campaign to kill where you are. that's their slogan. the fbi has arrested a significant number of people radicalized in the last number of weeks. the fbi director warning lawmakers that terrorists are more interested in launching cyber attacks against the u.s. the plotting appears to be in