Piano Solo ("Alone Plan") was an envisaged plot for an Italian 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,
William Harvey, then chief of the CIA station in Rome, and Renzo Rocca, director of the
Gladio units within the military secret service SID.