Watch live: Special programme on Ukraine

Today marks the 30th day of war in Ukraine.

Here are the latest developments:

???? Joe Biden visits Poland later today - home to more than two million Ukrainian refugees - after earlier warning that NATO would respond "in-kind" if Russia uses chemical weapons;
???? NATO's chief has pledged to send more weapons to Ukraine to bolster the alliance's response to the Russian invasion;
???? Russian forces fired two missiles late on Thursday at a Ukrainian military unit on the outskirts of Dnipro - destroying buildings and causing two fires;
????Ukraine's navy claimed it sank a large Russian landing ship near the port city of Berdyansk that had been used to bring in armoured vehicles, while Russia said it had taken the eastern town of Izyum after fierce fighting;
???? President Volodymyr Zelenskyy urged his country to keep up its military defence and not stop "even for a minute" in his nightly address;
???? Ukraine accuses Moscow of forcibly removing around 402,000 civilians from shattered Ukrainian cities to Russia to pressure Kyiv to give up;
???? The US is expanding efforts to help Ukrainian refugees - agreeing to accept up to 100,000 people escaping from the war and to increase support for Eastern European nations that have taken in most of the people fleeing Russian forces.

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