and why? largely because of that house freedom caucus. those conservatives who announced their support for daniel webster, a long shot candidate, a conservative from florida to take sthat speakership. but they could ban together if they so choose and make life difficult for kevin mccarthy and prevent him from ascending to that speakership later this month. >> thank you for that background. russia's air strike in syria posing a bit of a clash. cnn's barbara starr has more from the pentagon. what's happening? >> good morning, alisyn. all of this aimed at making u.s. pilots safe over syria. two f-16s came within 20 miles of a russian fighter jet. under new rules, the f-16s broke off and changed direction. the new rules require u.s. pilots to move away, when they