Advisor to the Presidential Administration of Russia, 2001 to 2013 - Professor Sergey Karaganov

How far can Vladimir Putin push his iron-fist foreign policy? Crimea is his, but Russia's next move in eastern Ukraine is much less clear cut, as is the extent of the Kremlin's neo-imperialist ambition. Hardtalk speaks to Sergei Karaganov - one of Russia's most influential foreign policy thinkers and until recently, an advisor to President Putin. Is restoring Russian greatness a coherent strategy? Picture: Professor Sergey Karaganov, Credit: BBC