robert: ath breugh. after months of insults and threats, president trump agrees to bilateralit talks north korea. i'm robert costa. inside the president's high-stakes diplomatic gamble. tonight on "washington week." >> i explained to president leadership and his maximum pressure policy together with international solidarity moved us to thisur tn robert: presidentrump prepares for an historic face-to-face eting with north kean leader kim jong-un. can ask the dictator to dismantle his nuclear program? tweet writes in a tweet, great progress being made but sanctions will be made until an agreement is needed. meeting being planned. plus, the long-standing rules ob glal trailed are being upended as mr. trump signs off on new tariffs on steel and aluminum imrts. ignoring calls from republicans and allies. the president remains didiant. prt trump: the actions we're taking today are not a matter of choice. they're aatter of necessity for our securit robert: we discuss it all with kayla tausche of cnbc, peter bak