Referenced by
Methane and radon levels have increased in the air around abandoned mines, which can also create explosion hazards in nearby buildings
Defense
Claim
By the end of 2017, both the separatist and Russian troop presence in the Donbas was significant, with thousands of combatants involved
Defense
Claim
In July 2014, the Ukrainian Armed Forces conducted a successful counteroffensive, liberating parts of the region from separatist control
Defense
Claim