agreement, that the united states will, if needed, defend our allies and defend ourselves. >> how clear and precise is this warning to this north korean -- the north korean leadership in your view? >> sounded pretty clear to me. i -- i'm happy that the secretary has jumped on this and has gone to korea and i understand he's also going to china to press the case there. >> chairman, some dramatic revelations came out of a hearing you had yesterday about the status of north korea's nuclear program. it was in some declassified, some previously classified information from the defense intelligence agency, and it said the dia assessed with moderate confidence the north currently has nuclear weapons capable of delivery by ballistic missiles. this caused a giant stir. presumably you have access to a lot of information we don't have access to. what's your exact assessment, then, of the north korean nuclear program?