PTR - June 23, 2014

The world's biggest cash prize in science has been awarded for the first time in maths. One of the five new multi-millionaires was Russian. As Russia tightens its control of the Internet, Twitter agrees to block Russian users from accessing certain kinds of content. And - The Moscow film festival is in full swing - presenting a documentary about one of Russia's most cherished places, the Hermitage Museum. We sit down with the film's director to find out what previously unseen treasures it reveals.