John Kasich: 'Big gaps' in counterintelligence04:09
GOP presidential candidate joins MSNBC's Brian Williams on the phone following fatal attacks in the airport and metro station in Brussels, Belgium.
Acting defense secretary heads to NATO summit03:44
How Trump's unscheduled press conference happened07:06
Fact-checking the president's news conference03:47
Former defense secretary expresses concerns for Putin meeting11:04
Trump creates his own narrative at press conference08:35
Trump holds impromptu conference, makes false claims15:53