Ukraine has admitted it may have to retreat from its last post in the Luhansk region as Russian forces continue their relentless march.
Putin's forces - now into their fourth month of the invasion - have concentrated on the east of the country in recent weeks.
Ukrainian soldiers leaving Luhansk will be a blow to the country, due to its symbolic significance in the war.
This morning Boris Johnson offered fresh support to Ukrainian President Volodymyr Zelensky.
Zelensky said they spoke on the phone about 'strengthening defence support for Ukraine, intensifying work on security guarantees and supplying fuel'.
He added: 'We must work together to prevent a food crisis and unblock Ukrainian ports.'
Putin wants both Luhansk and Donetsk regions in full and their capture was one of his earliest objectives in the deranged despot's so-called 'special military operation'.
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