The Russian General Staff said on Friday that 1,351 Russian troops have died and another 3,825 injured in Ukraine, where a fierce resistance by soldiers and non-professional fighters have frustrated Moscow’s attempt at a swift victory. The figures are the first official casualty tolls issued by Moscow since the beginning of March, when the number of Russian dead was given as 498. The latest claim could not be independently verified and does not appear to include Moscow-backed separatists. Analysts believe that the Russian military has in reality lost thousands of troops in the month-old confli…