with that new range the kn-14 can possibly reach washington, d.c.. >> reporter: the missiles have not yet been tested to reenter the atmosphere but experts say the north koreans could be able to fire the missiles at the u.s. during trump's administration. there are also new concerns tonight about kim's violent tendencies and how president trump will deal with him personally. what should he know about kim jong un as an adversary? >> he is a dangerous man. he has grown up around violence. he seems to even enjoy violence. he has brutally killed dozens of his generals. he is a leader without legitimacy. he needs to prove to the korean people's army that is a tough guy. >> reporter: on the campaign trail trump alternated between saying it's possible he could meet with kim and saying he wants to push him out of power. >> he is like a maniac, okay. you have to give him credit. how many young guys. he was like 26 or 25 when his father died, take over the tough