In the 2005 book "Firmaets største bedrift" historian Peer Henrik Hansen argues that Aksel Larsen was recruited by the U.S. Central Intelligence Agency (CIA). According to Hansen, Larsen had his first meetings with American agents in November 1958 in his own home. According to the newspaper "Information", Larsen was offered information on sentiments among the party hard-liners if he would cause a split in the party. For years the CIA had a bugging device in the apartment of Alfred Jensen, the vice-chairman of the Communist Party of Denmark. From there they knew about the tensions in the party leadership.