diplomacy still is the priority in controlling north korea's new missile launches. >> i do not believe the capability in itself brings us closer to war because the president has been very clear and secretary of state has been very clear that we are leading with diplomatic and economic efforts. >> reporter: the secretary has long warned that war with kim jong-un could lead to catastrophe. >> if you know if this goes to a military solution it is going to be tragic on an unbelievable scale. >> reporter: military options have been updated for the president but the problem is unchanged. a limited u.s. strike poses significant risk. kim jong-un could quickly attack seoul, south korea, killing millions. >> we would have to be prepared to go all in meaning all out korean war. >> reporter: the u.s. does have a limited missile defense capability on land and at sea but there are questions about its reliability in some cases. >> the same situation applies even if we are to just take out one...