No surrender in Mariupol as Russian deadline expires; refugees top 5m

A Russian ultimatum to Ukrainian troops in Mariupol to surrender or die expired on Wednesday afternoon with no mass capitulation, but the commander of a unit believed to be holding out in the besieged city said his forces could survive just days or hours.

The United Nations said on Wednesday the number of refugees who have fled Ukraine since Russia invaded on Feb 24 had exceeded five million. More than half are children.