06/20/2009 05:12 am ET | Updated May 25, 2011

Stephen Colbert Talks Branson, Childhood, And His Middle East Trip On Letterman (VIDEO)

Stephen Colbert was a guest on the "Late Show with David Letterman" tonight and he discussed a range of topics, including his childhood and growing up as the youngest of 11 children, preparing for his own show's upcoming visit to the Middle East, and his befuddlement at why Virgin boss Richard Branson wants to fight him.

Watch a clip from the interview below in which Colbert discusses going to "basic training" for his show's trip to the Middle East. Colbert says the trip will be the "closest I've ever come to being brave."

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