approved in 2000. >>> the other big headline from the town hall with trump had to do with nuclear weapons. take a look at this exchange. >> they hear a guy running for president of the united states, using nuclear weapons. >> why do we make them? >> because it's -- >> i would be the last one to use the nuclear weapon, sort of the end of the the world. >> can you tell the middle east we're not going to use the nuclear weapon? >> i won't take it off the table. >> you might use it in europe? >> no, i don't think. so. >> well, change it. >> i'm not taking the cards off the table. >> well, this comes as -- after trump told "the new york times" he would use nuclear weapons only as a quote, absolute last step and he said he supported the idea of japan and south korea developing their open nukes. a reversal of the nuclear disarmament. >>> later today leaders from 50 nations will gather in washington on preventing nukes