gaza. these difficults are more difficult to control where they land and take off. it's a big change in terms of tactics by the militants in gaza but has the potential to be a big problem, sandra, for israeli officials on this side. >> sandra: lots of activity on the israel-gaza border. >> bill: and the dangers of social media and artificial intelligence. what john roberts is saying about that. >> sandra: and president trump just days away from an historic summit in singapore. can he succeed where others before him have failed. >> the united states has been clear time and time again the verif verifiable removal of nuclear weapons is acceptable.