Putin says mobilised troops will be ready in two weeks as he warns Nato against ‘global catastrophe’ – as it happened

Russian president says any direct clash with Nato troops would be global catastrophe' as he says 220,000 will be called up. This live blog is now closed

Here are some of the latest images of the war that have been sent to us over the newswires from Ukraine and beyond.

Today is Defenders Day in Ukraine, and the US ambassador to Kyiv, Bridget A Brink, has issued a video message. In it she says:

We honour the brave men and women who have served in the defence of Ukraine's freedom. This year, this holiday has a special symbolic meaning. Since 24 February, virtually every citizen of your country has in some way become a defender of your land, your lives, your future.

I know Russia's war doesn't stop at the line of contact. And I honour the bravery and resolve of all Ukrainians, men and women, children and the elderly, professional soldiers and volunteers, representatives of every aspect of society from the home front to the frontline. All of you play a vital role in defending Ukraine. We know Ukraine will prevail.