Russia honors 'national heroes' killed in mysterious rocket blast

Russia has bestowed posthumous awards on five nuclear experts and "national heroes" who died in a mysterious explosion at sea during a rocket engine test, authorities said on Sunday.Officials have been drip-feeding information about the blast on a platform in the White Sea off northern Russia that caused a radiation spike in a nearby city.U.S.-based nuclear experts said they suspected the explosion occurred during the testing of a nuclear-powered cruise missile vaunted by President Vladimir Puti