harwood did. now a promise that new national security advisor can run his own operation. >> the president has said very clearly that the new nsa direct will have total and complete say over the makeup of the nsc and all of the components. and there is no demand made by president trump on any candidate. >> he wrote about the failure of the u.s. military to speak up to the president during the vietnam war. that book "daereliction of duty became a must read inside the military circle. now the question is will he continue to speak up to this president of the united states? >> thank you very much. want to bring in cnn military analyst, presidential historian