Pedzisa mutsara unotevera: Ukama pakati pePCI neSoviet Union hwakaparara zvishoma nezvishoma sezvo bato racho rakabva pakuteerera kweSoviet neMarxist-Leninist orthodoxy muma1970 nema1980 uye rakatendeukira kuEurocommunism neSocialist International. PCI yakatsvaka kubatana nemapato eSocialist neChristian Democracy (Historic Compromise). Zvisinei, mutungamiri webato reChristian Democrat Aldo Moro
kubiwa nokuurawa kwakaitwa neRed Brigades muna May 1978 kwakagumisa tariro ipi neipi yokuwirirana kwakadaro. Chibvumirano chacho chakanga chasiyiwa zvikurukuru somutemo wePCI muna 1981. Proletarian Unity Party yakabatanidzwa muPCI muna 1984.