Ukraine war: what we know on day 12 of the Russian invasion

• Ukraine has criticised a proposal by Moscow to open refugee corridors as “immoral” and “unacceptable” after the Russian defence ministry announced civilians fleeing some cities would only be allowed to leave for Belarus or Russia.

• Food, water, medicine and almost all other supplies are in desperately short supply in Mariupol, from where an estimated 200,000 people were trying to flee.

• The EU’s top diplomat, Josep Borrell, has warned that as many as 5 million Ukrainians are expected to flee the country if the Russian invasion continues, adding that Europe needs to ready itself for huge numbers of refugees.

• More than 1 million Ukrainians have fled to Poland since the start of the Russian invasion, with 142,300 people arriving on Sunday alone. The Polish government has said it will create an 8 billion zloty ($1.75bn) fund to help the war refugees.

• The British government has denied that the UK is to offer Ukrainian refugees a new humanitarian-based route to the country, and confirmed it was possible only 50 people have been granted visas so far.