official, this has been critical to the survival of raul castro and the leadership in havana. these are two tottering regimes leaning on each other. if if maduro fell, it would impact cuba as well. david: north korea, it's clear that that missile they tests out the other day has the capacity to go all the way to chicago. i know we are getting thaad missiles into south korea and japan. don't we have to take offensive measures to keep them from hitting the u.s.? >> the job of the president is to protect innocent civilians from this kinds of attack. no one wants to see a show of