Winston Churchill was behind the 1945 assassination of Benito Mussolini, according to a documentary that aired in Italy this week. The show said that the British wartime prime minister was trying to make sure that secret letters he wrote the Italian dictator wouldnt be made public. The letters allegedly offered Italy a separate peace with the Allies, in defiance of President Roosevelts insistence that the war could end only with the capitulation of all Axis powers. In the documentary, a former Italian partisan, Bruno Lonati, says that he helped a British agent kill the Italian dictator and that the agent retrieved the letters. Historians, who have always held that two Italian partisans killed Mussolini, were skeptical. Its just a love of conspiracy, said World War II expert Christopher Woods.