Films about war dominate the shortlist of movies competing for the title of 2007's best documentary at the Academy Awards next February.
Eight of the 15 films on the list look at past or current wars. The others include Michael Moore's Sicko, which is about the American health care system.
Five final nominees will be picked in January before the Oscars are handed out at the 80th awards ceremony.
Last year winner was Al Gore's global warming film An Inconvenient Truth.
Among the war films on the list are Charles Ferguson's No End in Sight, Body of War and Operation Homecoming: Writing the Wartime Experience.
Taxi to the Darkside, deals with the Afghan war and tells of the death of a taxi driver at a US military base, and Nanking looks at the killing of 300,000 civilians in China by Japanese troops in 1937.
Lake of Fire, which looks at the abortion debate, is also featured on the shortlist along with, Please Vote for Me which is about children in China holding an election.
The ceremony takes place on 24 February at Hollywood's Kodak Theatre.