Ukraine has delivered one of its deadliest single attacks since the beginning of the Moscow's full-scale war on its neighbor four years ago, killing 13 people and wounding 39 others in a strike in Tatarstan deep inside Russia, officials said on Monday.

Authorities in Russia's Tatarstan region say a Ukrainian drone attack on the city of Nizhnekamsk killed 13 people and wounded 48 others.

MOSCOW — At least 12 people were killed and injured in a Ukrainian drone attack on industrial and civilian targets in the city of Nizhnekamsk in Ru...