Russia has set a new ultimatum for surrender in the battered city of Mariupol, where Ukrainian forces and reportedly hundreds of civilians are holed up in the Azovstal steel plant potentially facing their “last days, if not hours,” one Ukrainian commander said. Vastly outnumbered, the Ukrainian troops have pledged to keep fighting.

Officials in Ukraine continue to call for more weapons support and faster delivery as Russia intensifies its bombardment of the eastern Donbas region.

Meanwhile, the U.S. is preparing a massive new arms package for Ukraine, according to sources who spoke to NBC, and Chinese imports of Russian coal have plummeted.