Moscow tells international officials communication issues have knocked offline 2 locations near missile testing site where deadly explosion killed several scientists

Scientists killed at secretive nuclear research facility were believed to be developing Burevestnik nuclear-powered cruise missile

At annual parade marking WWII Allies victory in Europe, president says Russian armed forces ready to cooperate with others combating 'terrorism, neo-Nazism and extremism'

Government forces backed by Russian air power push forward in areas in northwest Syria still controlled by jihadists