Ukraine war: Zelenskyy condemns Russia 'war crime' over Mariupol hospital airstrike

Ukraine's president has accused Russia of carrying out a "war crime" after Moscow's airstrike on a children's hospital in the besieged port of Mariupol.

Washington has publicly warned that Russia might seek to use chemical or biological weapons in Ukraine, after Moscow accused Kyiv of having chemical weapons laboratories, without giving any evidence.

Russia continued to bomb and shell Ukrainian cities on Wednesday night. Tens of thousands of civilians left besieged areas under ceasefire agreements during the day, fewer than hoped as several evacuation efforts again failed.

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