using it and by the way, we're on a better path. >> david gergen, gordon chang, appreciate it. gordon chang is author of "nuclear showdown: north korea takes on the world." just ahead, another president tweet causes concern. coming up next, new reporting that undermines two key white house claims about the russia investigation and a former campaign adviser. [notification tone] ♪ i love your vest. your crocheted purses have wonderful eyes. ♪ in the modern world, an app can help you find your perfect match. and with esurance, coverage counselor® can help you find great coverage that's a perfect match too. that's auto and home insurance for the modern world. esurance. an allstate company. click or call.