Russia alleges Ukrainian helicopters struck Belgorod fuel depot

A Russian official has alleged that two Ukrainian military helicopters flew across the border and bombed a fuel depot in the eastern city of Belgorod, in what would be, if confirmed, the first known air raid by Ukraine’s forces on Russian soil since Moscow invaded its neighbour in late February.

Video images of the purported attack posted online on Friday showed what looked like several missiles being fired from low altitude, followed by an explosion that sparked a huge fire. It was not possible to independently verify the images.

Kremlin spokesman Dmitry...