Stephen Sackur challenges Oliver Stone on whether he failed to ask "pressing questions" of leaders Fidel Castro and Hugo Chavez.

The Oscar winning film director unveiled his Wall Street sequel Money Never Sleeps at the Cannes Film Festival.

His films are fuelled by anger at US values, foreign policy and politics, and often generate much debate and controversy.

You can watch the full interview on Wednesday 4 August 2010 on the BBC News Channel on BBC World News at 0330, 0830, 1530, 1930 GMT and on the BBC News Channel at 0230 and 0430 BST.

This programme was first broadcast on Thursday 27 May 2010.