russia now is a coalition of two, iran and russia supporting assad. russia's the outlier. >> reporter: both leaders called for greater intelligence sharing to prevent future terrorist attacks but president obama added candidly, what happened in paris is very hard to stop. >> you have eight individuals with light weapons, that's a hard thing to track. >> reporter: no question which side the u.s. come down on in the shooting of the russian fighter jet by turkey. one senior administration official noted, the longstanding u.s. support for our ally turkey, quote/unquote, still exists. the white house is hopeful the incident won't impact with moscows. they feel that is the key to everything in the battle against isis. >> joinings now, lee on panetta,