Rosa Babayan was in her kitchen fixing tea and slicing bread for breakfast when the first artillery shell of the morning slammed into her concrete apartment building. As she rushed down to the cellar with her family, another shell burst nearby, smashing the windows in the stairwell and sending a shard of glass into her forehead. Ten minutes later, she emerged to survey the damage, daubing the blood from just above her hairline. The corner bedroom of her fourth-floor apartment and all the rooms below it were a heap of rubble and twisted steel.
Since that February morning when a Soviet-made...