<prompt> Qedela umusho olandelayo: Ubudlelwano phakathi kwe-PCI neSoviet Union bahlukana kancane kancane njengoba leli qembu lalisuka ekulaleleni iSoviet kanye ne-orthodoxy yamaMarxist-Leninist ngawo-1970 nawo-1980 futhi laya e-Eurocommunism naseSocialist International. I-PCI yafuna ukubambisana namaqembu amaSocialist kanye namaChristian Democracy i-Historic Compromise. Nokho, umholi weqembu lamaChristian Democrat u-Aldo Moro  <response>: ukuthunjwa nokubulawa kwamaBrigade Abomvu ngoMay 1978 kwaqeda noma yiliphi ithemba lokuvumelana okunjalo. Le mpikiswano yalahlwa kakhulu njengenqubomgomo ye-PCI ngo-1981. I-Proletarian Unity Party yahlanganiswa ne-PCI ngo-1984. 