The trailer for Michael Moore's film Fahrenheit 9/11 has made its debut on the movie's official website.
Moore interviews politicians, soldiers and bereaved parents in his film
The trailer will also be shown in cinemas across the US from Friday.
The documentary is being released in the US on 25 June by Miramax heads Bob and Harvey Weinstein, through a deal with two outside companies.
Miramax's parent firm Disney refused to distribute the film, which criticises President Bush's response to the 11 September attacks on the US.
The documentary recently won the prestigious Palme d'Or award at this year's Cannes Film Festival.
It is only the second documentary in Cannes' history to be awarded the festival's top prize.
Michael Moore's film made history, winning the Palme d'Or at Cannes
The film explores the Iraq war and alleges links between the Bush family and Osama Bin Laden.
In the trailer, images of President Bush, joking with his supporters, are cut together with pictures from the Iraq war.
It shows clips about the overnight printing of the US Patriot Act, with senators admitting no-one read it, and President Bush had planes authorised to pick up Osama Bin Laden's family.
Moore, who won an Oscar for his anti-gun documentary Bowling for Columbine, has said he hopes Americans see Fahrenheit 9/11 before they vote in this year's presidential election.
Moore, who makes no secret of his anti-Bush stance, thanked the Cannes jury for bringing his film to global attention.
"You will ensure that the American people will see this movie...You have put a huge light on this."
"I want to make sure if I do nothing else for the rest of this year that those who died in Iraq have not died in vain."