WALLACE: (Voiceover) People who know McCain well say he can hold a grudge. He also has a legendary temper. But if McCain can be hard on his friends and even harder on his enemies, he can also be very hard on himself.

Sen. McCAIN: I m--made serious, serious mistakes and did things wrong when I was in prison, OK?

WALLACE: What did you do wrong in prison?

Sen. McCAIN: I wrote a confession. I was guilty of war crimes against the Vietnamese people. I intentionally bombed women and children.

WALLACE: And you did it because you were being tortured...

Sen. McCAIN: I...

WALLACE: ...and you'd reached the end of the line.

Sen. McCAIN: Yes. But I should have gone further. I should have--I--I never believed that I would--that I would break, and I did.