Mikhail Khodorkovsky: Making an enemy of Putin

Stephen Sackur speaks to the the former Russian oligarch turned Putin foe, Mikhail Khodorkovsky. He was once the boss of energy company Yukos and Russia’s richest oligarch. After falling out with President Putin, he spent 10 years in prison. Now he wants tougher western sanctions on Moscow and more arms for Ukraine in the war with Russia. If Putin faces defeat in Ukraine, how will he respond?