in chicago is bruce cumings, profesessor of h history at thte university of chicago. his recent piece for the nation headlined "this is what's really behind north korea's nuclear provocations." he is the author of several books on korea, including "korea's place in the sun: a modern history" and "north korerea: another country." and joining us by democracy now! video stream is christine hong, associate professor at university of california santa cruz and an executive board member of the korea policy institute. she has spent time in north korea, including a visit to the country as part of a north american peace delegation. professor, let's begin with you. the significance of what has taken place in the last few days starting with today, the surprise visit of vice president pence to the demililitarized zo? >> you know, i think what we are witness to is a kind of revisionism, both with vice president pence and secretary of state tillerson. they have made comments that strategiclicies patience is a thing of the past. i think the fundamental in misconstrues what it was. as