Interviewed by Max Keiser on RT, retired CIA and USMC officer Robert David Steele had this to say on terrorism in the United States:

"In the United States, every single terrorist incident we have had has been a false flag, or has been an informant pushed on by the FBI."

Source article: http://www.washingtonsblog.com/2015/03/steele-every-single-terrorist-attack-u-s-false-flag-egged-intelligence-services.html