. >> but parag khanna says the next president should break down borders between north and south and form an all powerful north american union. he will make his case. >>> also, islamic radicalism in pakistan has always been worrying because of that country's nuclear arsenal. pakistan's charismatic politician imran khan tries to explain the anger against america in the muslim world and why he says it's actually lessened in pakistan in recent years. >>> but first here is my take. after donald trump's foreign policy address this week, the chairman of the senate foreign relations committee, republican bob corker, announced that he was very impressed, extolling the broadness, the vision of the speech. the wall street journal said it was serious. the national interest, jacob hybrand said that the candidate was more restrained. clearly we now consider it a wonder of sorts that donald trump can spend 40 minutes in front of cameras during which he avoids vulgarity, retrains from bigotry and reads from a teleprompter. the speech was in fact an embarrassment, a meandering collection of slogans. >> w