Here we go again. Former Italian premier Silvio Berlusconi confirmed on Saturday that he plans to run for a fourth term. Although he quit last year after failing to save Italy's economy, Berlusconi has since revoked his support for the current government, headed by Premier Mario Monti. Monti says the revocation is manageable. But nothing seems to be able to stop Berlusconi. Free-falling poll numbers? A tax-fraud conviction that bans him from holding office? Details. He claims he's running “out of a sense of responsibility.” But for what?