Found this documentary on YouTube, and watched in Saturday evening. 

In this documentary is showed time when Dmitry Medvedev was president of Russia, and how Barack Obama decided to deal exactly with him, and not with Vladimir Putin. 

In this documentary Dmitry Medvedev is portrayed as wise and independent leader, how he started reforms in Russia. As well it's showed how USA negotiated with Russia concerning Iran Nuclear program.

 

If you are interested in Russia's politics, I could suggest this documentary for you.