'Powerful assault' under way at Azovstal - Ukrainian commander

'Powerful assault' under way at Azovstal - Ukrainian commander

Back at the Azovstal steelworks plant in Mariupol, a Ukrainian military commander says Russian forces have launched another offensive.

"A powerful assault on the territory of the Azovstal plant is under way with support from armoured vehicles and tanks," Sviatoslav Palamar, deputy commander of Ukraine's Azov military unit said in a statement on social media.

He says Russian forces are attempting "to land a large number of infantry by boat".

The plant is the last hold-out of the Ukrainian defenders in the port city. Check out the geography of the sprawling industrial complex below.