CNN  —  Severe wildfires raging in a Siberian region of Russia have engulfed more than 600,000 hectares of forest, local authorities have warned. In the Eastern Siberian territory of Zabaykalsky Krai, a federal-level state of emergencies has been in place since late April, Russian state news agency TASS reported. Despite huge efforts to tackle wildfire outbreaks in the region, which borders Mongolia , 49 forest fires continue to burn, with a total area exceeding 629,000 hectares, the Russian