Option 1 suggests that Chechnya is in the news due to discovery of huge reserves of oil. Although Chechnya has some oil reserves, it`s not in the news for those.
Option 2, the correct answer, refers to separatist rebellious activities by the local people. This is accurate as Chechnya, a federal subject of Russia, has a history of conflict with Russian federal forces primarily because of separatist movements by Chechen rebels seeking independence.
Option 3 claims the news is about conflicts between the government troops and the narcotic mafia, leading to a great loss of human life. While Chechnya does have law enforcement issues, it`s usually not in the global news for conflict with a `narcotic mafia`.
Option 4 indicates recent news due to extreme cold wave killing hundreds of people. However, although Chechnya experiences harsh winters, there haven`t been reported incidents suggesting extreme cold waves causing mass fatalities.