UDOMLYA, Tver Region — A quarter of a century after the Chernobyl nuclear disaster sent a radioactive cloud over Europe, Russia is casting itself as a champion of stricter safety standards for the atomic energy industry. President Dmitry Medvedev plans to use a Group of Eight summit that starts Thursday to amplify his call for binding rules the Kremlin says are needed to avert a repeat of the crisis at Japan’s Fukushima Daiichi […]