In a dramatic appeal, the Ukrainian commander of the remaining marines in the heavily contested port city of Mariupol has asked for an evacuation to a third country.
"The enemy outnumbers us 10 to 1," Serhiy Volyna, commander of Ukraine's 36th Marine Brigade, said in a one-minute video message posted to Facebook early Wednesday morning. "We appeal to all world leaders to help us."
Russia has advantages in the air, artillery, ground forces, equipment and tanks, Wolyna said.
The Ukrainian side is defending only one site, the Azovstal Steel Works, where civilians are sheltering in addition to the military.
Volyna asked for an "extraction procedure" and urged that everyone - soldiers from the Mariupol garrison, more than 500 wounded combatants and hundreds of civilians - be taken to safety on the territory of a third country.
"This is our appeal to the world," said Wolyna. "This could be the last appeal of our lives. We are probably facing our last days, if not hours."
Surrounded by Russian troops
The south-eastern Ukrainian port of Mariupol was completely surrounded by Russian troops on March 1, shortly after the start of the Russian attack on Ukraine.
The city and the port are largely considered to have been destroyed.
Most recently, according to Russian information, around 2,500 Ukrainian fighters and 400 foreign mercenaries were holed up in the steelworks.
According to Ukrainian reports, around 1,000 civilians are said to have sought protection there. Russia has repeatedly called on Ukrainian troops to surrender.