Activism

He was active in the OAS support networks, and arrested in 1961 in Madrid along with Pierre Lagaillarde

Pierre Lagaillarde

Pierre Lagaillarde was French politician, and a founder of the Organisation armée secrète .Lagaillarde was a lawyer at Blida in Algeria, a reserve officer of the paratroopers, and an elected deputy of Algiers...

.

Giannettini participated to the newspapers Il Roma and Il Secolo d'Italia, as well as to L'Italiano

L'Italiano

L'Italiano is an Italian pop song by Toto Cutugno released 1983. It was his biggest international hit and is his best known composition...

, headed by Pino Romualdi

Pino Romualdi

Giuseppe "Pino" Romualdi was an Italian right-wing politician who served both the Partito Fascista Repubblicano and the Movimento Sociale Italiano...

 (MSI). In 1963-64, he started to write in the Rivista Militare, a journal of the Italian military general staff, and participated to various NATO meetings.

Giannettini participated to a colloquium

Colloquium

Colloquium can refer to:* the Parliament of Scotland, called a "colloquium" in Latin records.* any musical piece celebrating birth or distribution of good news, a hymn...

 on "revolutionary warfare" on 3–5 May 1965 in Rome (Parco dei Principi hotel), which was organized by the Institute Alberto-Pollio, "quasi-exclusively financed by the SIFAR

Sifar

Sifar is an album by the Indian singer Lucky Ali. Sifar was his second album released by Sony music in 1998.Sifar is an Urdu and Hindi word meaning "zero"...

" military intelligence agency. Giannettini presented there one of the main reports. According to René Monzat, "this colloquium provided the theoretical framework for the strategy of tension

Strategy of tension

The strategy of tension is a theory that describes how to divide, manipulate, and control public opinion using fear, propaganda, disinformation, psychological warfare, agents provocateurs, and false flag terrorist actions....

."

Following this colloquium, to which about 20 students participated (among them, Stefano Delle Chiaie

Stefano Delle Chiaie

Stefano Delle Chiaie is a neofascist Italian activist . He went on to become a wanted man worldwide, suspect to be involved in Italy's strategy of tension, but was acquitted. He was a friend of Licio Gelli, grandmaster of P2 masonic lodge...

 and Mario Michele Merlino ), Giannettini and other intervenants were hired by the Italian secret services. In April 1968, these students participated to a trip to Greece of 60 students from the "League of Greek Fascist Students in Italy" and of 51 Italian neo-fascist students, organized by the Greek junta. According to Frédéric Laurent, author of L'Orchestre noir (p. 75), "more than half of the Italians (...) returned from Athens suddenly converted to Anarchism

Anarchism

Anarchism is generally defined as the political philosophy which holds the state to be undesirable, unnecessary, and harmful, or alternatively as opposing authority in the conduct of human relations...

, Leftism, or to Communism

Communism

Communism is a social, political and economic ideology that aims at the establishment of a classless, moneyless, revolutionary and stateless socialist society structured upon common ownership of the means of production...

, preferably Chinese".

In 1966, Giannettini published with Pino Rauti

Pino Rauti

Giuseppe Umberto "Pino" Rauti is an Italian politician who has been a leading figure on the far right for many years...

 "Red Hands on the Armed Forces" (Le mani rosse sulle forze armate). In 1969, he participated to an Italian military delegation to West Germany

West Germany

West Germany is the common English, but not official, name for the Federal Republic of Germany or FRG in the period between its creation in May 1949 to German reunification on 3 October 1990....

 to prepare the buying of Leopard tank

Leopard tank

The Leopard is a main battle tank designed and produced in West Germany that first entered service in 1965. Developed in an era when HEAT warheads were thought to make conventional heavy armour of limited value, the Leopard focussed on firepower in the form of the German-built version of the...

s. According to the Swiss brochure made by friends of Giannettini, he was an important agent of the SIFAR and then of the SID ("Agent Z").

During the Parliamentary Commission on Terrorism headed by Senator Giovanni Pellegrino

Giovanni Pellegrino

Giovanni Pellegrino is an Italian politician.Born in Lecce and a lawyer by profession, he was a Senator of the Republic from 1990 with the Italian Communist Party and the Democrats of the Left to 2001...

, the Italian Minister of Defense officially recognized before the parliamentaries that Giannettini had been on the Italian secret services' pay-roll. Giorgio Freda, who was acquitted in the trial concerning the 1969 bombings, gave public marks of trust to Giannettini.

According to the magistrate Guido Salvini

Guido Salvini

Guido Salvini is an Italian judge, based in Milan. He issued European arrest warrants in 2005 against approximatively 20 CIA agents accused of having taken part in the abduction of Abu Omar, the Egyptian cleric in Milan in 2003. The case is known in Italy as the Imam Rapito affair...

, in charge of the investigations concerning the 1969 Piazza Fontana bombing

Piazza Fontana bombing

The Piazza Fontana Bombing was a terrorist attack that occurred on December 12, 1969 at 16:37, when a bomb exploded at the headquarters of Banca Nazionale dell'Agricoltura in Piazza Fontana in Milan, Italy, killing 17 people and wounding 88...

, "Guido Giannettini had contacts with Yves Guérin-Sérac in Portugal ever since 1964"