It's almost 14:30 in Kyiv. If you're just joining us, here's a round-up of the latest developments.
Russia closes in on Kyiv: Intense fighting is raging on the outskirts of the capital as Moscow attempts to seize its key target. British intelligence says the bulk of Russian forces are within 25km of the centre. Ukrainian officials fear the Russians may be preparing to launch a large-scale assault.
Key cities encircled: Sirens and explosions have been heard in many other cities across Ukraine, as Russian troops try to encircle key targets. The besieged cities of Kharkiv, Mariupol, Mykolaiv and Sumy have been enduring relentless shelling as well as freezing temperatures, with no power and little food or water. In Mariupol, a mosque, where more than 80 adults and children were sheltering, was shelled by Russian forces, Ukrainian officials say.
Fury at mayor's abduction: Hundreds of residents have taken to the streets of the south-eastern city of Melitopol to protest against the abduction of its mayor by Russian forces. Ukraine's President Zelensky demanded his immediate release and accused the Russians of "moving to a new stage of terror".
Fresh talks: The leaders of France and Germany have been holding another round of phone talks with Russia's President Putin. They were previously in contact on Thursday, when Emmanuel Macron and Olaf Scholz demanded an immediate ceasefire from Russia. Moscow has rejected such calls.
Exodus mounts: The conflict has now sent 2.5 million Ukrainians fleeing to neighbouring countries. Poland says more than 1.6 million people have fled there, while Moldova says it has reached a "breaking point" in its ability to cope with refugees.