A massive long-range drone strike on the TANECO oil refinery in Russia's Tatarstan region has left 13 people dead and dozens injured, marking a major geographical escalation in the war.

A Ukrainian drone strike hit the Russian city of Nizhnekamsk, killing 12 people and wounding 39 others in an attack on industrial and civilian areas.

Ukrainian drone strikes on a popular Russian Black Sea beach resort and the Crimean Peninsula left at least 11 people dead and dozens wounded.