Venezuelan President Hugo Chavez asserted last night that the United States could have orchestrated the September 11 attacks five years ago to justify its invasions of Afghanistan and Iraq.
Mr Chavez, who regularly accuses the Bush administration of planning to invade Venezuela and plotting to overthrow or assassinate him, offered no evidence to support his assertions.
He claimed, however, that momentum was growing for a conspiracy theory aired on television this week by a Venezuelan journalist.
"It is still not clear what the cause was, nor who directed the terrible act that claimed thousands of lives in seconds and gave the American empire an excuse to hit out with more even brutality and fury at the world," Mr Chavez said in a speech in Caracas.
"It is difficult to believe that the towers of the World Trade Center could have collapsed as they did, in the blink of an eye, because of the planes."
Mr Chavez suggested the towers could have been dynamited and noted that the wreckage of the plane that smashed into the Pentagon had not been recovered. Cconspiracy theories persist about the 2001 attacks by hijacked airliners which killed nearly 3,000 people when they crashed into New York's World Trade Center and the Pentagon.
But no evidence has emerged to dispute the accepted version of events. The US government says al-Qaeda leader Osama bin Laden masterminded the attacks and al-Qaeda itself has claimed responsibility for them.
The events of September 11 were also filmed and photographed and seen live on television screens by millions across the world.
The leftist Venezuelan president regularly rails against the United States for sending its forces into Afghanistan and Iraq as part of the war on terrorism it unleashed after the attacks.