He is an active member of the anti-war movement in Canada, and has written extensively on the war in Yugoslavia. After the September 11 terrorist attacks he has also been involved in highlighting the historical relationship between the US government, Bin Laden and Al Qaeda. On Russia Today, he stated that President Obama, not Osama is threat number 1 to Global Security. In the Preface of America's "War on Terrorism" he wrote:
The myth of the "outside enemy" and the threat of "Islamic terrorists" was the cornerstone of the Bush adminstration’s military doctrine, used as a pretext to invade Afghanistan and Iraq, not to mention the repeal of civil liberties and constitutional government in America. Without an "outside enemy", there could be no "war on terrorism".
He is a frequent contributor to
Le Monde diplomatique,
Third World Resurgence and
Covert Action Quarterly. he is also a contributor to the Encyclopaedia Britannica. His publications have been translated into more than twenty languages. His latest book is titled
America's "War on Terrorism".
Chossudovsky claims that the High Frequency Active Auroral Research Program (HAARP) is actually an operational weapon of mass destruction, with the power to alter the weather, disrupt regional electrical power systems, and modify the Earth's magnetic field, as well as potentially trigger earthquakes and affect people's brains. He has also espoused several 9/11 conspiracy theories, including the "stand-down" of the United States Air Force, the supposed lack or disappearance of airplane debris at the Pentagon, and the "pulling" of 7 World Trade Center. He has also claimed that the invasion of Afghanistan had long been planned by the United States and NATO, with the 9/11 attacks an excuse to justify the war.