What's the latest? 22 March 07:30

Latest updates of Ukraine-Russia war

It's  past 07:30 in Kyiv. If you're just joining us, or catching up, here's a round-up of the latest developments that Qazet.az published

• Biden warning: The US president says there are clear signs Vladimir Putin may be preparing to use chemical and biological weapons in Ukraine. Biden says the Russian leader "had his back to the wall" as a result of Ukrainian resistance, and there was a danger he could resort to more severe tactics
• Zelensky defiant: Ukraine's president says his country will never bow to ultimatums from Russia after Moscow said it would allow people out of Mariupol if Ukraine surrendered the besieged city.
• Russia steps up air assault: The Ukrainian military says Russia has boosted its aerial presence in Ukraine's air space in the past 24 hours
• Russian casualties claim: A Russian news outlet that briefly published what it said were the official numbers for the number of servicemen killed in Ukraine, nearly 10,000 dead and over 16,000 wounded has said it was the victim of a hack