Russian firefighters tackled blazes in the city of Kazan after a drone attack blamed on Ukraine

Kyiv on Saturday staged a major drone attack on the Russian city of Kazan, 1,000 kilometres (620 miles) from the frontier, the latest in a series of escalating aerial attacks in the nearly three-year conflict.

A drone smashed into a high-rise apartment building in Kazan, a city of more than 1.3 million, damaging a skyscraper but leaving no victims, local officials said.