Carabinieri police officers stand outside the courtroom where the testimony of Mafia informant Gaspare Spatuzza is due to be heard in Turin December 4, 2009. Italian Prime Minister Silvio Berlusconi goes back on trial for corruption on Friday, while in an unrelated Mafia case, mobster-turned-witness Spatuzza may try to link him to the Cosa Nostra. REUTERS/Alessandro Garofalo(ITALY CRIME LAW POLITICS)