President Volodymyr Zelenskyy said Friday Ukraine had reached a strategic turning point in its war with Russia, but cautioned that it was not possible to say how long fighting would continue.

"It is impossible to say how many days we still have to free Ukrainian land. But we can say we will do it. For we have already reached a strategic turning point," he said in a televised address, urging the international community to increase sanctions pressure on Russia.

Zelenskyy was shown outside the presidential administration building in Kyiv.

He also announced that authorities are working on 12 humanitarian corridors and trying to ensure needy people receive food, medicine and basic goods.