The attacks started fires at a major oil refinery and gas processing plant and disrupted flights from the Volga to the Caucasus mountains.
Researchers used drone imagery to analyze the full scope of a massive, 3,000-year-old fortress in the Caucasus mountains.
The war left... For the second year in a row, the South Caucasus is seeing tensions rise ... a disputed territory which Armenia... The world focuses today on the chaos in Afghanistan.