Russia's defence ministry said on Friday that Ukrainian fighters and foreign mercenaries had been "securely blockaded" at the Azovstal steel plant where they have been holding out in the Ukrainian city of Mariupol.
President Vladimir Putin had ordered his defence minister on Thursday to block off the vast Azovstal complex rather than try to storm it.
United Nations Secretary-General Antonio Guterres will visit Moscow on Tuesday, and will meet withRussia's President Vladimir Putin following its February invasion of Ukraine, a spokesperson for the UNchief said.
Russian President Vladimir Putin on Friday accused Kyiv of refusing to allow Ukrainian troops to surrender in the besieged port city of Mariupol, as he spoke to EU chief Charles Michel.
Russiasaid Friday it intended a full-bore assault to carve out a sizeable slice of Ukraine but risked intensified world outrage as the UN documented the killing of dozens of civilians in one town.
Ukraine's government, emboldened by a fresh influx of high-grade Western weaponry, said its beleaguered forces were still holding out inside a sprawling, seaside steelworks in the razed city of Mariupol.
The success ofRussia's military operation in Ukraine depends on Moscow's ability to capture the strategic port city of Mariupol, which has been surrounded for weeks by Russian forces, the regional governor told AFP Friday.
"The enemy's offensive operation in the south hinges on Mariupol. The enemy is trying to focus all its efforts on it," Donetsk governor Pavlo Kyrylenko said.