Controversial filmmaker Oliver Stone has announced that he is making a documentary about another man who likes to set the cat amongst the pigeons - Venezuelan president Hugo Chavez.

After just completing W., his biography on the hapless US president George W Bush, Stone has begun work on this new documentary and plans to release it next year.

"It's about Chavez and the South American revolution," Stone told Variety.

The film will focus on the opposition Chavez has faced at home and abroad, particularly from the US government.