Why Mariupol is Ukraine's Dunkirk and where the war goes next

ITV News - What You Need To Know

In 1940 we had Dunkirk. In 2022 the people of Ukrainian have Mariupol - a symbol of defiance in defeat that has fired their belief in winning the war with Russia.
But how did a few hundred fighters hold out surrounding forces 100 times stronger for so long?
And - now it's effectively over - what does the near-apocalyptic siege on the port city’s steelworks tell us about the way this war is going? And what are the next key battlegrounds?
From Ukraine, ITV News Correspondent John Ray tells News At Ten Anchor Tom Bradby what you need to know.