Sergei Guriev is one of modern Russia's best and brightest economists. Well connected to the new Russian political elite, Guriev was a strong voice for economic liberalisation and is a Russian patriot. So why, earlier this year, did he choose - as so many talented Russians have in the past - to go into exile? And what does Guriev's extraordinary story tell us about the true face of Vladimir Putin's Russia?(Image: Sergei Guriev (left) attends a meeting with premier Dmitry Medvedev (right) in Moscow. Credit: Associated Press)