development and expansion of their nuclear arsenal. >> still, the north koreans believe these have been uneven trades and they want the trump administration to ratchet back crippling sanctions before the regime scales back its program. but secretary pompeo is resolute. >> stray voltage happens to be all around us. we're very focused. we know with who we're negotiating, we know what their positions are and president trump has made his position clear. no economic relieve until we achieved our objective. >> president trump had gotten credit from north korean experts for meeting with kim jong-un and getting the north koreans more analyzed in dialogue. analysts are split on whether that's falling apart. >> we're about as far apart as you can get. five months after the summit. we don't have an agreed-upon definition of what denuclearization is. >> and north korea's threat to build up their forces may mean they'll start retesting the missiles that can test the united states. >> if they do test, everything