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.
According to Rome prosecutor, Pietro Salvitti, quoted by La Repubblica, Guido Salvini was one of the targets of a "network" which aimed at slandering various political opponents of Silvio Berlusconi via the Mitrokhin Commission, headed by senator Paolo Guzzanti, by claiming they worked for or were manipulated by the KGB, the former intelligence agency of the Soviet Union, dissolved in 1991.
This network includes, according to Salvitti, Mario Scaramella, Nicolò Pollari, head of SISMI intelligence agency indicted in the Imam Rapito affair, Marco Mancini, n°2 of SISMI arrested in July 2006 for the same reason, as well as Robert Lady, CIA station chief in Milan also indicted in the kidnapping of Abu Omar in Milan.
[1] Guido Salvini started investigating events relating to Italy's strategy of tension, which have involved a NATO stay-behind network known as Gladio, in July 1988.
He indicted in 1998 David Carrett, officer of the US Navy, on charges of political and military espionage as well as participation in the 1969 Piazza Fontana bombing.