Retired Lt. Gen. H.R. McMaster discusses his time as President Trump’s National Security Advisor, his military career that spanned 30 years including service in both Iraq wars, the rise of a new generation of geopolitical threats, and what America needs to do to stay secure.

Lt. Gen. H.R. McMaster responds to the suicide attack that killed at least 13 U.S. service members outside the Kabul airport; Gen. David Petraeus discusses the U.S. withdrawal from Afghanistan and what Taliban rule means for American security.