Piano Solo was an envisaged plot for an Italian anti-communist coup in 1964 requested by then president of the Italian Republic, Antonio Segni. It was prepared by the commander of the Carabinieri, Giovanni de Lorenzo, in the beginning of 1964 in close collaboration with the Italian secret service SIFAR, CIA secret warfare expert Vernon Walters, then chief of the CIA station in Rome William King Harvey, and Renzo Rocca, director of the Gladio units within the military secret service SID. It was named Solo (Italian for "alone" or "only") because it was supposed to be directed only by the Carabinieri.[1]