Harrowing footage shows a boy saying he's desperate to see the sun as around 15 children cower in an underground shelter in besieged Mariupol.
The Ukrainian city has been the focus of Russian aggression in recent weeks, with the Azovstal steel factory now the only area not under the control of invaders.
Ukraine has said Vladimir Putin's forces have launched an assault on the plant, where an estimated 1,000 civilians are sheltering - with the Russian leader blocking supplies to starve out those inside.
