Retired Adm. Mullen on "self-generated crisis" in the White House
Retired Adm. Mike Mullen, who was chairman of the Joint Chiefs of Staff from 2007 to 2011 under Presidents Bush and Obama, joins "CBS This Morning" to discuss the latest White House turmoil, President Trump's first overseas trip, North Korea and why it's critical for the White House and the intelligence community to be on the same page.