UN Secretary-General Antonio Guterres on Monday called for an immediate end to Russia's military operations in Ukraine.

"The fighting in Ukraine must stop. It is raging across the country, from air, land and sea. It must stop now," he told an emergency special session of the UN General Assembly on Ukraine.

"Enough is enough. Soldiers need to move back to their barracks. Leaders need to move to peace. Civilians must be protected. International humanitarian and human rights law must be upheld. The sovereignty, independence and territorial integrity of Ukraine, within its internationally recognized borders, must be respected," said Guterres.