Christopher Bollyn is a US writer who has written extensively about US and Israeli involvement in the 9-11 atrocity (see: http://www.bollyn.com/home ).
Thus, for example, Christopher Bolleyn, "The Israeli connection to 9-11": http://www.bollyn.com/public/Israeli_Connection_to_9-11.pdf :
“U.S. investigators and the controlled media have ignored a preponderance of evidence pointing to Israel’s intelligence agency, the Mossad, being involved in the terror attacks of 9-11”.
Christopher Bollyn on 9-11 fraud, 9-11 deception, and War on Terror (2016): “The “War on Terror” is an Israeli/Zionist fraud that was foisted on the American people in the immediate aftermath of the terror attacks of 9/11. Unbeknownst to most Americans at the time, however, is the fact that the terror attacks of 9/11 were an Israeli false-flag operation that was designed to be blamed on Arab Muslims for the sake of kick-starting the long-planned Zionist stratagem known as the “War on Terror,” which is really an Israeli war agenda to be fought by the U.S. As long as the United States continues to wage the extremely costly and counter-productive “War on Terror” the American people will simply be unable to enjoy the true blessings of peace and prosperity. According to the National Priorities Project, the current military campaign in Afghanistan is costing us more than four million dollars per hour and the total cost of the wars fought since 2001 is more than eight million dollars per hour for a total of nearly 1.7 trillion dollars. These military campaigns are literally taking the food off of our table. The United States has been at war against Iraq for twenty-five years - since 1991. We have been waging war in Afghanistan for almost fifteen years (not counting U.S. involvement in the Afghan-Soviet War). Isn't it time to raise our voices so that the political establishment and mainstream media wake up to the fact that we want this multi-trillion dollar fraud called the War on Terror to end? It should be abundantly clear that neither the selected politicians nor the media will do anything to end this outrageous fraud unless we make our voices heard” (Christopher Bollyn, “9/11 tour: overflow crowd at National Press Club presentation”, Christopher Bollyn, 7 September 2016: http://www.bollyn.com/#article_15548 ).