Sen. Chris Coons on Bolton firing: I'm concerned that President Trump's instinct to withdraw from engagement of the world is now going to be strengthened.

John Bolton’s exit will have an immediate impact, as the president heads to the un in less than two weeks. Democratic senator Chris Coons, a member of the Foreign Relations Committee, joins Andrea Mitchell to discuss the potential dangers of so many key national security White House vacancies.Sept. 11, 2019