A crack Russian unit of fighters was almost totally destroyed during intense fighting near Kharkiv, rendering it inoperable, according to reports from the frontline. The devastating massacre took place last weekend during fighting for Vovchansk, a city located 73 km (45 miles) northeast of Kharkiv. The city has become the focus of heavy fighting after Russian troops launched a surprise attack in the Kharkiv region in early May. As of last week, the Russians claimed to control around and half of the city - but the situation on the ground remains very fluid. After making initial gains, the Russians have...