'Not a great joker' - Russia's ex-UK ambassador on Putin

Vladimir Putin has been sworn in for a fourth term in office at a ceremony at the Kremlin. Addressing the nation Mr Putin says improving the lives of ordinary Russians would be the focus of his next six years as president. Opponents have likened his eighteen years in power to the reign of a tsar. Sir Tony Brenton is a former British ambassador to Russia. He discusses the implications with Susie Ferguson.