marvin kalb, nbc news, the state department. >> love the '80s graphics.oining me now, former new mexico governor, bill richardson. we figured you would appreciate the throwback there. in all seriousness, we have been talking a lot lately about words. you were governor, you were congressman, you were ambassador to the u.n., secretary of energy under bill clinton. talk about the importance of presidents being careful with what they say. >> well, i remember that time when ronald reagan made that joke, and it did provoke that reaction from the russians. now imagine if donald trump is president and he starts coming out like with his daily idiotic statements that not only are dangerous, but they're wrong. so words matter. the world looks at our election. we are the leader of the free world. despite any faults that we may have. we're the most powerful military in the world. we have the largest nuclear arsenal. we're the cradle of democracy. and so, you know, words matter. and this is why this man is so irresponsible. >> a few minutes ago, we were taking his spee