David Major, a retired Reagan administration counterintelligence adviser, gave a 2011 retrospective of intelligence gathering successes and failures worldwide. He also talked about how intelligence is used in the U.S. and in other nations. In his comments, illustrated with numerous graphics and video clips, he said that far more espionage cases occur in the U.S. than the public knows about, with Russia and China being the top two nations that recruit Americans to spy on the U.S.