Reporter Marie-Monique Robin said to "L'Humanité" newspaper: "The French have systematized a military technique in the urban environment which would be copied and passed to Latin American dictatorships." The methods employed during the 1957 Battle of Algiers were systematized and exported to the War School in Buenos Aires. Roger Trinquier's famous book on counter-insurgency had a very strong influence in South America. Robin said that she was shocked to learn that the French intelligence agency Direction de surveillance du territoire (DST) communicated to the DINA the names of refugees who returned to Chile (Operation Retorno), all of whom were killed. "Of course, this puts the French government in the dock, and Giscard d'Estaing, then President of the Republic. I was very shocked by the duplicity of the French diplomatic position which, at the same time received political refugees with open arms, and collaborated with the dictatorships."