KIEV, Ukraine — Kostyantyn Kovba never answers calls from unknown numbers on his mobile phone. The 23-year-old is afraid a military commissioner might summon him to serve in Ukraine's army to fight pro-Russian separatists in the east.
When he visits his mother's house, they shutter the windows, lest a commissioner drops by. "We never even barbecue in the yard, because they may see and come over," he said.
