An interesting opinion piece today by Vladimir Ryzhkov in the Moscow Times sees one of the last bastions of media freedom - Ren TV - looking like it may have to fight for its independence.  The increasingly popular station, the only one in Russia to offer a critical interpretation of the Sayano-Shushenskaya dam disaster and cover the Dissenter's Marches in Moscow and St Petersburg, may be fettered by management 'restructuring'.Controlled by National Media Group, owned by Putin ally Yury Kovalchukm, Ren will have a new Director General and will find new lodgings alonside state-controlled RIA-Novosti and the tow-the-line RT.  Ryzhkov recollects Gazprom's Media's overhaul of NTV which followed similar lines: could this be another nail in ...