1979 death of Carmine Pecorelli
1997, Robert Hutchinson, 'Their Kingdom Come – Inside the Secret World of Opus Dei', p. 350: "In 1994 Andreotti's friend and former foreign trade minister, Claudio Vitalone, brother of the lawyer Wilfredo with whom Carboni had been in almost hourly phone contact while shadowing Calvi's flight to London, was charged with ordering [Carmine] Pecorelli's slaying. Accused with him were Mafia bosses Gaetano Badalamenti and Pippo Calò. Andreotti, friend of three popes who claimed never in his long career of public service to have forsaken his Catholic principles, joined them at trial, accused of issuing the contract against Pecorelli. Magistrates in Palermo had already stunned the world by accusing 'Uncle Giulio' of 'protecting, assisting and consorting with the Cosa Nostra' in return for electioneering support that helped maintain the Christian Democrat Party and Andreotti at the apex of Italian political life for more than three decades."
Andreotti was a member of the secretive Opus Dei/Knights of Malta-linked Cercle group, which was largely ran by the CIA's Ted Shackley (who ran much of the U.S. mafia). Roberto Calvi saw Andreotti as the real head of the P2:
1997, Robert Hutchinson, 'Their Kingdom Come – Inside the Secret World of Opus Dei', p. 263-264: "P2 was formed in the late 1960s, allegedly at the behest of Giordano Gamberini, a Grand Master of the Grand Orient of Italy and friend of Gulio Andreotti. But he was much closer to Francesco Cosentino, who also was well introduced in Vatican circles. Either Andreotti or Cosentino, or perhaps both, were said to have suggested the creation of a small cell of trusted right-wing personalities in key national sectors, but especially banking, intelligence and the press, to guard against what they perceived as 'the creeping communist threat'. The person Gamberini chose to develop the P2 Lodge was a small-time textile magnate from the Tuscan town of Arezzo, midway between Florence and Perugia, who after two as a Freemason had risen to the Italian equivalent of Master Mason. His name, of course, was Licio Gelli. But the P2's top man, according to Calvi, was none other than Andreotti, followed in line of command by Cosentino and Ortolani [Umberto Ortolani; secret chamberlain of the Papal Household; member of the inner council of the Knights of Malta; said to be a member of Cardinal Giacomo Lercano; met with Licio Gelli, Roberto Calvi, and others in Rome in December 1969]. Andreotti always denied Calvi's allegation. But the fact remains that Calvi feared Andreotti more than Gelli or Ortolani. As for Cosentino, he died soon after the P2 hearings began. The truth of the matter, [professor] Javier Sainz said, is that the P2 Lodge was part of a secret right-wing network created with the Vatican's blessing as part of the Occident's bulwark against communism. The P1 Lodge was in France and the P3 Lodge was in Madrid. The P3 was headed by a former minister of Justice, Pio Cabanillas Gallas [cabinet minister under Franco, the dictator of Spain until 1975; secretary of the Council of the Realm, Franco's highest advisory body; Minister of Information and Tourism; remained influential in government after Franco's death; Minister of Culture; Minister of Justice 1981-1982; more centrist than Cercle member Munoz; member of the European Parliament]".
1991, Philip Willan, 'Puppetmasters: The Political Use of Terrorism in Italy', p. 106: "The relationship between Giulio Andreotti and the coup plotters and, for that matter, his relationship with Gelli, have never been fully clarified. Several witnesses have testified that Gelli frequently spoke on the phone in their presence to someone he claimed was Andreotti. There is also an often-published photograph which shows the two standing together in evening dress and beaming smiles. Andreotti stated in a 1989 interview (Panaroma, 22 October 1989) that he had met Gelli because of the latter’s role as a director of the Permaflex mattress factory in Frosinone, which would mean their acquaintance dates from 1965 at the earliest, as the factory was inaugurated in that year. According to Gelli, however, the two first met in 1958. Andreotti described how he had met Gelli later, in Argentina when Juan Peron returned to power, and was amazed at the deference with Gelli was treated by the Argentine President, an observation that supports Arrigo Molinari’s assertion, examined earlier, that Gelli may have been in some way instrumental in presenting Andreotti to Peron. … Andreotti declared that he had no reason to think that ‘Gelli was someone to avoid’. … Gelli professes the highest regard for Andreotti."
1991, Philip Willan, 'Puppetmasters: The Political Use of Terrorism in Italy', p. 107: "According to Paolo Aleandri, it was a common rumour among rightists that Andreotti had been considered by the Borghese coup plotters to be a kind of beacon or reference point within the political establishment. General Miceli offered a non-committal comment on this delicate subject during an interrogation by Judge Tamburino in 1974. ‘As for the rumours about Andreotti’s leanings towards a coup, I can say that there is a literature on the subject which has not been backed up by objective proof. Anonymous documents about it were in circulation in 1972 and I believe that D’Amato was in possession of a couple of reports which were passed to me and which I sent on to the Prime Minister [that is to Andreotti.]’"