Russia-Ukraine war: Ukraine taking significant casualties and making slow progress towards Russian defence, say western officials – as it happened

Counteroffensive is still going in the right direction' says officials, in one of west's first assessments of Ukrainian action launched on 4 June

• At a glance: what we know on day 476 of the invasion

Dmitry Medvedev, long-term ally of Vladimir Putin and currently deputy chair of the security council of Russia, has said on Telegram that Russia needs to put in a demilitarised zone as far west as Ukraine's Lviv, which he referred to by its Russian name Lvov and German name Lemberg.

He went on to say that, as a result of the Nord Stream sabotage, for which he cited western complicity", that Russia should have no restrictions left to refrain from destroying the cable communications of our enemies, laid along the ocean floor".