MOSCOW (Reuters) -Russian Foreign Minister Sergei Lavrov voiced alarm on Friday over a sharp increase in shelling in eastern Ukraine and accused the #OSCE special monitoring mission of glossing over what he said were Ukrainian violations of the peace process. Ukrainian government forces and pro-Russian separatists have been fighting in the Donbass region of eastern Ukraine since #2014 in a conflict that Kyiv says has claimed some 15,000 lives. Washington and its allies have raised fears that the upsurge in violence in the Donbass could form part of a Russian pretext to invade Ukraine. Tensions are already high over a Russian military buildup to the north, east and south of Ukraine."