Oleksandr Striuk says about 13,000 people remain in city, which is ‘being destroyed ruthlessly block by block’
Russian forces have taken about half of Sievierodonetsk in eastern Ukraine as heavy fighting continues in and around the key city.
The city’s mayor, Oleksandr Striuk, said artillery bombardments were threatening the lives of the thousands of civilians still sheltering in the ruined city, with evacuations not possible.
