Di Cristina was one of the first who saw the danger of the strategy of the
Corleonesi of
"Totò" Riina to dominate Cosa Nostra. Di Cristina clashed with the Corleonesi over the killing of Lieutenant-Colonel Giuseppe Russo of the Carabinieri on August 20, 1977. Russo, who according to the Corleonesi was a confidant of Di Cristina, was killed without the consent of the Commission, which had opposed a prior request by
Totò Riina and
Bernardo Provenzano. Di Cristina understood the strategy of the Corleonesi. While the more established Mafia families in
Palermo refrained from openly killing authorities because that would attract too much police attention, the Corleonesi deliberately killed to intimidate the authorities in such a way that the suspicion would fell on their rivals in the Commission. Di Cristina became one of the main targets of the Corleonesi, just as
Giuseppe Calderone. The Corleonesi were attacking the allies of the Palermo families in the other provinces to isolate men like
Stefano Bontade,
Salvatore Inzerillo and
Gaetano Badalamenti. On November 21, 1977, Di Cristina survived a shooting, but his most loyal men Giuseppe Di Fede and Carlo Napolitano were murdered by the Corleonesi. In January 1978 , Di Cristina, together with Gaetano Badalamenti and Giuseppe Calderone, met
Salvatore "Ciaschiteddu" Greco, who had arrived from
Venezuela where he was living, to discuss the elimination of Francesco Madonia, head of the
Vallelunga Pratameno Mafia family, who was suspected of having ordered the failed attack on Di Cristina at the instigation of Totò Riina, to whom he was closely linked; Greco, however, advised postponing any decision to a later date but, having left for
Caracas, he died there prematurely of natural causes on 7 March 1978. Following Greco's death, Madonia was killed on 16 March by Di Cristina and Salvatore Pillera, sent by Giuseppe Calderone. Riina then accused Badalamenti of having ordered the murder of Madonia without authorization and put him in a minority, having him expelled from the
Sicilian Mafia Commission and replaced by
Michele Greco, one of his allies. == Police informer ==