India, Aug. 11 -- A Ukrainian drone attack on Monday on the Russian city of Nizhnekamsk killed 13 people, including a child, and wounded 48 others, authorities in the Tatarstan region said.

Officials didn't say what the drones targeted, but the city is an important oil refining hub, home to two refineries and a petrochemical plant. Ukraine has targeted Russian oil facilities with long-range drones almost daily in recent months. The barrage has caused fuel shortages in Russia, eaten into Russian refining capacity, and unsettled the Russian public.

Ukrainian President Volodymyr Zelenskyy says it is a campaign to force Russian President Vladimir Putin to the negotiating table and stop his more than 4-year-old invasion. Nizhnekamsk came und...