Moscow attack: how do countries at odds cooperate in the field of intelligence?. Russia had been warned by the United States of the ‘imminence’ of an attack, several weeks before the Crocus City Hall attack.
These links do not surprise General Dominique Trinquant: “There are regular communications between services of countries which do not maintain good relations” “During the Cold War, the CIA and the KGB ( the Soviet intelligence services ) always maintained unofficial relations,” also notes Philippe Hayez, professor at Sciences-po.