The Russian army has advanced a further 12 kilometres into eastern Ukraine.
Ukrainian authorities on Monday said the country had planned eight humanitarian corridors for civilians to escape the war.
A forum was held in Moscow to discuss how the ongoing war in Ukraine has been affecting Nigerians.
The United Kingdom has revoked the licence of the Russian state-controlled news channel Russia Today UK.
Ukrainian troops responded to every attack by Russian units, said Zelensky in a video message published on Telegram on Friday.
The Ukrainian military says it has launched operations to flush the Russian military out of the outskirts of the capital, Kyiv.
However, NATO had currently ruled out the establishment of such a no-fly-zone amid fears it could dramatically escalate the conflict.
Russia added that in spite of sanctions it could fare well without what it cast as a deceitful and decadent West.
The president also called for Russia to be internationally outlawed as a terrorist state.
Mr Zelensky compared the assault on Ukraine to Pearl Harbor and the 9/11 attacks.
