The Sicilian mafia ordered the assassination of former mayor of New York Rudolph Giuliani, a court in Palermo has heard, according to the UK's Mail Online. (Another surprising revelation from a separate trial in January unearthed a plot to blow up the Leaning Tower of Pisa.)
So know we actually have, in the form of Italian court records, corroboration for a claim Giuliani has been making for years. (More recently, we learned the Sicilian Cosa Nostra also had plans to whack former New York Governor Mario Cuomo, until they learned the extent of his security detail.)
Giovanni Falcone fearlessly hunted the Sicilian Mafia.