Monday marks the 25th day of war in Ukraine after the invasion was launched by Moscow on 24 February.
The fighting has forced more than ten million Ukrainians to flee their homes, with thousands of people killed or wounded and widespread damage in the wake of shelling and aerial bombardments.
Follow our live updates below.
06:51
Monday’s key points:
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Ukrainian deputy prime minister and defence minister both refused Moscow’s ultimatum for the surrender of the southern port city of Mariupol, asking for the humanitarian corridor to be established as soon as possible — an option the Kremlin refuses.
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Earlier on Sunday President Volodymyr Zelenskyy accused Russia of committing war crimes in Mariupol, saying in a video address that the siege of the city will go down in history for “terror that will be remembered for centuries to come”.
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Only four out of seven agreed humanitarian corridors were functioning on Sunday, with some 7,000 civilians evacuated, Ukrainian authorities said.
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Air raids continued across the country, with a number of explosions recorded overnight in the capital Kyiv. Several buildings and a large shopping mall were reported damaged, with no information available on possible casualties.
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The UN said on Sunday that 10 million people in Ukraine have now fled their homes since the Russian invasion.
08:03
Ammonia leak in Sumy contained
Emergency officials have contained an ammonia leak at a chemical plant that contaminated a wide area in the eastern Ukrainian city of Sumy, officials said Monday.
Sumy regional governor Dmytro Zhyvytskyy did not say what caused the leak.
Earlier, he said the nearby village of Novoselytsya, about 1.5 kilometres southeast of Sumy, was under threat.
The Sumykhimprom plant is on the eastern outskirts of the city, which has a population of about 263,000 and has been regularly shelled by Russian troops in recent weeks.
07:28
Four killed overnight in bombardment of Kyiv
At least four people were killed, and a large shopping centre in the densely populated Podil district was devastated in shelling overnight on Monday.
Emergency services reported at least four people were killed by the overnight shelling near the city centre late Sunday. The force of the explosion shattered every window in the high-rise next door and twisted their metal frames.
07:00