STEVE INSKEEP, HOST:
Good morning. I'm Steve Inskeep with news of Donald Rumsfeld, Renaissance man. The former secretary of defense is considered an unintentional poet. A writer once made a book of poems out of his press conference quotes, like the one about known knowns. Now he's an app developer. His game is based on a card game Winston Churchill once played. The Wall Street Journal asked the 83-year-old if this work helps keep his mind sharp, and Rumsfeld replied that that was not a known known. It's MORNING EDITION.