The author will at the same time address screenings in all countries where he filmed the documentary.

In the film, Moore "invades" various countries to see what the US could learn from them. Slovenia impressed him with its free higher education, while France is highlighted for its gourmet school meals and Norway for its prison system, among others.

Moore shot the sequence about Slovenia about a year ago at the Ljubljana Faculty of Economics, where he attended an English-language lecture and talked to Slovenian and foreign students.

According to Kinodvor, Moore will discuss the documentary with the people he filmed with in various countries. "We're trying to get him to also take questions from the audience to make the discussion as interactive as possible," Kinodvor spokeswoman Aliki Kalagasidu has told the STA.

Moore made his name with Bowling For Columbine, a 2002 film exploring the fascination with gun culture in the US, which won him an Oscar in 2003. His 2004 film attacking the foreign policy of US President George W. Bush, Fahrenheit 9/11, has become the most successful documentary film of all times.