Ukraine has rejected an ultimatum to surrender its besieged port city of Mariupol to Russian forces.
Ukrainian authorities said overnight that Moscow had demanded Mariupol be handed over by 5 a.m. Russian forces said they would spare the lives of those who complied with their surrender ultimatum and would allow civilians to leave if their demands were met.
Thousands of civilians are trapped in the city, which is running dangerously low on vital supplies like food, water and medicines.
