joining me now from washington is mark landler, white house correspondent for the "new york times." thank you, mark, for joining us. >> hi, charlie. >> rose: how did this happen? >> well, charlie, as you know, for the whole week, there's been this interesting diplomatic dance unfolding between the iranians and the americans at the united nations. the white house said early in the week, it was open to a handshake or some sort of an informal meeting. they put feelers out to the iranians. there was a lot of discussion of logistices, and ultimately president rouhani skipped the opportunity and said to several other people, including you, that he needed more time to set it up. there needed to be more groundwork done. well, it turns out that another day later, as he's on his way out of new york, the iranians sent word to the white house that president rouhani would welcome a telephone call. and so today at about 2:30 in the afternoon, president obama, the white house, they placed this call. he is in his car on his way to j.f.k. for his flight home to tehran. and he answers, and the two men