A security source told Business Insider that the drones struck a refinery in Russia's Komi Republic on Thursday.

The attacks came just days ahead of another round of U.S.-brokered talks between envoys from Russia and Ukraine this week in Geneva.

A rights group says drone strikes hit a busy market in Sudan's Kordofan region, killing at least 28 people.

Ukrainian officials say a man and his three toddlers were killed when a Russian drone razed their house, and the mother, 35 weeks pregnant, is in critical condition.

A deadly night of drone strikes rattled southern Russia. In Adygea, 11 people were injured and one killed after an explosion tore through a residential area. While officials blame Ukraine, independent ...