he has in fact authorized commanders to have more ability to under take missions on their own authority and this was in afghanistan in the works for some time. it doesn t mean he doesn t know about it. u.s. commanders will tell you they don t want to surprise any president or white house. they like the president to know what they re up to. thank you, barbara. there is widespread concern at this hour that north korea will conduct sixth nuclear test this weekend. china warns the conflict could breakout at any moment as the rhetoric from the north and u.s. heats up. cnn s alexandra field is live in seoul, south korea with the details. reporter: alisyn, good morning. washington does fully expect and anticipate and preparing for the possibility of the sixth nuclear test or ballistic missile launch from north korea. no one can say with certainty when it would happen. the question now is how the u.s. will respond to those