Sen. Joe Lieberman told NBC's Tom Brokaw that he regretted some of his statements attacking Barack Obama during the campaign but declined to offer an apology.

"I do regret as I said to the caucus and afterward publicly, there were some things I said in the heat of the campaign that I wish I had said more clearly. Other things, frankly, I wish I hadn't said at all," said Lieberman. "That happens to all of us in the heat of it campaign but nonetheless, I regret it and I want to move forward."

Brokaw pressed Lieberman for an apology. "I heard word 'regret' but not the word 'apology.'"

"You can take from the word regret what you will," answered Lieberman.

John Amato: