Yves Guérin-Sérac

Yves Guérin-Sérac (French pronunciation: [iv ɡeʁɛ̃ seʁak]), born Yves Guillou ([iv ɡiju]; also known as Jean-Robert de Guernadec or Ralf; 2 December 1926 – 9 March 2022) was a French anti-Communist Roman Catholic activist, former officer of the French army and veteran of the First Indochina War (1945–54), the Korean War (1950–53) and the Algerian War of Independence (1955–62). He was also a member of the elite troop of the 11ème Demi-Brigade Parachutiste de Choc, which worked with the SDECE (French intelligence agency), and a founding member of the Organisation armée secrète (OAS), a French terrorist group that fought against Algerian independence in 1961-62.

After fleeing to Francoist Spain, where he and many other fugitive OAS members were granted refuge, Guérin-Sérac continued his far-right activities. It is alleged that he was an instigator of the so-called strategy of tension in Italy, and the main organizer of the 1969 Piazza Fontana bombing.