He says Ukraine is alone in fighting against Russia.
Ukraine President Volodymyr Zelenskyy has banned all men aged 18-60 from leaving the country.
He says Ukraine is alone in fighting against Russia, and has appealed for more help from NATO and western governments. He has also called on Vladimir Putin to sit down at the negotiating table.
Russian troops are approaching the Ukrainian capital on the second day of Moscow's military operation. Gunfire's been heard on the outskirts of Kyiv and residents have spent the night sheltering as they come under rocket strikes. Authorities are warning people to stay at home.
There is some diplomatic hope this afternoon, though - with reports from Moscow suggesting the Kremlin's ready to send a delegation to Belarus for talks with Ukrainian officials.
