Oliver Stone is no stranger to controversy. Whether exploring conspiracy theories in JFK, attacking the media in Natural Born Killers or cosying up to authoritarian leaders such as Vladimir Putin and Hugo Chavez for his documentaries, he has never been afraid to fight to get his voice heard. This makes him the perfect candidate to tell the story of whistle-blower Edward Snowden in the narrative film Snowden, which turns 10 this month. Snowden (played by Joseph Gordon-Levitt) is the former US...