Detailed text transcripts for TV channel - MSNBC - 20170730:21:24:00
American b-1 bombers and south korean fighter jets flew over the korean peninsula and the u.s. military says a test of its missile defense system thaad was successful. the system was designed to track and intercept missiles before they reach their targets. weapon experts fear that the latest launch of this intercontinental ballistic missile believes that north korea now has the capability to threaten major u.s. cities. i am joined by msnbc contributor steve collegeons who is editor-at-large for "the atlantic" and author of "a nuclear showdown," north korea takes the world. good to have you her...