Fighting has broken out on the Russian border at Belgorod, explosions are heard sporadically in Crimea each week, and there are signs of pocket insurgencies within the Russian occupied zone in Ukraine itself, and in parts of Russia. Both sides appear to have suffered huge losses — possibly as many as 300,000 killed and injured in all. Russia is now relying on the weight of numbers. A general mobilisation by stealth has produced roughly 300,000 in Ukraine and on its borders, with a reserve of some 200,000 in preparation.