Kammala jumla mai zuwa: Dangantaka tsakanin PCI da Tarayyar Soviet a hankali ta lalace yayin da jam'iyyar ta yi nesa da biyayya ga Soviet da kuma koyarwar Marxist-Leninist a cikin 1970s da 1980s kuma zuwa ga Eurocommunism da Socialist International. PCI ya nemi haɗin gwiwa tare da jam'iyyun Socialist da na Dimokiradiyya na Kirista (Shirye-shiryen Tarihi). Duk da haka, shugaban jam'iyyar Democrat na Krista Aldo Moro
satar mutane da kisan gillar da Red Brigades suka yi a watan Mayun 1978 ya kawo karshen duk wani fata na irin wannan sulhu. An yi watsi da wannan sulhu a matsayin manufofin PCI a 1981. Jam'iyyar Proletarian Unity Party ta haɗu da PCI a shekarar 1984.