Russian tanks seen in Mariupol in footage released by Ukraine military

Aerial footage of Mariupol shows what the Ukraine military says are Russian tanks on roads and in fields around the city, which is the focus of the greatest humanitarian concerns having been surrounded by Russian troops for more than a week.

Residents have been sheltering underground from relentless bombardment, unable to evacuate their wounded, and most are without food, water, power or heat. Local ceasefires to let them leave have repeatedly failed