Director Oliver Stone says he doesn't know if America is ready for his upcoming film about the September 11 terror attacks, but stresses the movie is a human rather than political account of the tragedy. Speaking to an audience during a question and answer session late Monday at the Bangkok International Film Festival, Oliver Stone was asked if Americans were ready for the first major Hollywood film on the subject. "Is America ready for 9/11? Is America ready for gay sex? I don't know," Stone told the audience, referring to Ang Lee's Oscar-nominated cowboy film "Brokeback Mountain" which has been a surprise hit in US cinemas. "It's about a rescue and families involved in the rescue. It's really a technical attempt to be realistic about what happened in that building," he said. AFP reports.