Sanctions have made it increasingly hard for Western firms to do business in Putin's Russia. But the Kremlin has warned companies from so-called “unfriendly states” may see their assets expropriated and nationalized, if they chose to cease operations. McDonalds, Shell, Mercedes, Koch Industries are among those grappling with their Russian operations. The former head of MI6 Sir Richard Dearlove weighs in on why this may leave the former KGB officer in an even tougher spot economically and uncharacteristically shares how long he thinks the Russian leader can hang on to power.