Russia almost in complete control of Kharkiv
Ukraine's President, Volodymyr Zelenskyy, says they needed to save their "heroes" of Mariupol - after more than 260 soldiers were rescued from a besieged steelworks.
But it marks the likely beginning of the end for defence forces in the port city - with Russia almost in complete control.
Negotiations are underway to evacuate the remaining troops.
Sky's International Affairs Editor, Dominic Waghorn, who's in Kharkiv, says the regiment have bought time:
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