Ukraine's defence ministry has published its daily report on the conflict. Here are the main points:

• Russian forces have lost 88 aircraft and helicopters since the war began
• A number of Russian pilots have been captured
• Ukraine's armed forces continue to defend the major port city of Mariupol in the south-east
• A "considerable quantity" of Russian equipment was captured in the Mykolaiv region - in the south, near Odesa
• Russian soldiers are "demoralised" by the strength of Ukrainian resistance

The BBC can't independently verify what the Ukrainian military is claiming. Russia has provided few details of losses suffered by its forces in Ukraine but military experts assess that it has been surprised by the strength of the Ukrainian resistance and has suffered problems with supply lines and troop morale.

BBC