Russian forces blamed for fire at Ukraine's Zaporizhzhya nuclear plant

A fire that broke out at the Zaporizhzhia nuclear power plant, the largest in Europe, is now secure; Ukrainian officials say it was caused by Russian troops shelling the plant.

Meanwhile, the Ukrainian President Zelensky asks for face-to-face talks with Russian President Putin.

And a humanitarian crisis has gripped the port city of Mariupol, whose power and water supplies have been cut off by relentless Russian shelling.