reporter: the missile test could have been timed to coincide with the talks between officials under kim jong-un and trump. how much pressure are they under to kick start a denuclearization process that s gone nowhere since trump walked out of the summit in february. we don t know on the north korean side how much pressure they are under. they do believe president trump is under pressure. reporter: the north koreans sense an opportunity perceiving trump as politically as a rule n vulnerable and starving for a win. what happens if these talks don t succeed? it will be back to square one and the question will be whether the personal relationship between trump and kim can be used to prevent us from going all the way back to fire and fury. reporter: analysts say it s a safe bet the north koreans are using that newly tested missile and the new submarine will be