twitter as much as he wants, but we know he pays attention to these. his approval rating is at 38%. so, 56% of americans disapprove of the job he is doing. this number is at a low for cnn's polling, and he is in very thin company, in terms of presidents who have had approval ratings that are this low just six months into office. >> let me ask you, sara, quickly, since you covered his campaign, you cover the white house, the fact that the president's tweeting about these poll numbers while there's a potential major crisis in a nuclearized warhead, north korea. >> reporter: it does make you wonder what the president is paying attention to today. even if he were, let's say, paying attention to cable news, he would see that every show is basically leading with this crisis in north korea. we've obviously asked the white house for any kind of information, any kind of response to the news that we've been getting on this development. so far, we've heard nothing from them. as you pointed out, we're