CIA blunderer eats humble pie

Former Deputy Secretary of State Richard Armitage says he is the source in the leak of a CIA official's identity and is now very sorry.

"It was a terrible error ...there wasn't a day when I didn't feel like I had let down the President, the Secretary of State, my colleagues, my family and the Wilsons."

Armitage was the first to discuss the identity of former Valerie Plame after her husband, former Ambassador Joseph Wilson, criticised the Bush Administration's Iraq policy.