VIDEO: President Barack Obama Reflects on the Drone Program on THE LATE SHOW WITH STEPHEN COLBERT

President Obama describes the decision-making process behind his administration's use of drone strikes and why he ultimately had to reform the system. Barack Obama's new memoir "A Promised Land" is available everywhere now.

Watch the clip from "The Late Show With Stephen Colbert" below!

The Late Show with Stephen Colbert is the premier late night talk show on CBS, airing at 11:35pm EST, streaming online via CBS All Access, and delivered to the International Space Station on a USB drive taped to a weather balloon. Every night, viewers can expect: Comedy, humor, funny moments, witty interviews, celebrities, famous people, movie stars, bits, humorous celebrities doing bits, funny celebs, big group photos of every star from Hollywood, even the reclusive ones, plus also jokes.