Despite protests across Russia sparked by last December's fraud-filled Duma (parliament) elections, Vladimir Putin is preparing to return to the presidency this May. Will Putin replay his 2004-2008 approach to Iran, during which Russia negotiated the S-300 air defense system contract with Tehran? Or will he continue Russia's breakthrough in finding common ground with the United States on Iran seen under President Dmitriy Medvedev, who tore up the S-300 contract? While coordinating more closely with Washington on Iran during the Medvedev administration, Moscow did not and has not closed the...