The UN refugee agency says the situation in Ukraine is quickly deteriorating and urged neighbouring countries to keep their borders open to Ukrainians seeking a safe haven.
"We have already seen reports of casualties and people starting to flee their homes to seek safety," says Filippo Grandi, UN high commissioner for refugees.
Several European countries bordering Ukraine are already preparing for the arrival of refugees fleeing the Russian invasion.
Poland is setting up reception points on its border and its hospitals are preparing beds for wounded Ukrainians, says the country’s health ministry.
Hungary and Slovakia both say they are ready to welcome refugees and are sending extra troops to manage the likely influx at additional crossings set up on their borders with Ukraine.
Slovakia's Prime Minister, Eduard Heger, urged: "Please let's have compassion and understanding for them."
Germany has also offered humanitarian help to countries bordering Ukraine.
