all right. we are following new developments with north korea. u.s. secretary of state mike pompeo spoke with his north korean counter part at a conference in singapore. they met briefly, shook hands. later pompeo passed along a letter from president trump. earlier this week trump himself received a letter from north korean leader kim jong-un. global affairs correspondent eli elise, what's the con tent of the letters? >> we don't know the context from kim jong-un or the letter from president trump to kim said, but now this is the new thing, fred. ever since the two met, it needs to be a letter from either leader to one another. it doesn't matter almost any more. these are just pleasantries.