Ken Khachigian was a speechwriter, trusted adviser, and confidante to America’s presidential giants and political legends. His book, "Behind Closed Doors: In the Room with Reagan and Nixon," draws the curtains back on his most private moments with Ronald Reagan and Richard Nixon during revolutionary changes in our economy, politics, communications, foreign policy, and culture. Was Reagan mentally slipping during his presidency? Does Nixon deserve all the historical hate? Hear the inside story of the Berlin Wall and Watergate on this episode of "Rick & Bubba University"!Learn more about your ad choices. Visit megaphone.fm/adchoices