The head of Russia's Wagner mercenary group claimed on Tuesday that his forces now control over 80% of the war-torn city of Bakhmut in eastern Ukraine, following a recent surge in fighting.
Senior Ukrainian military officials did not address the claims directly but said their forces were holding firm against fierce attacks in what once was a city of 70,000 and keeping Russian forces in check.
Wagner fighters have led Russia's monthslong efforts to capture Bakhmut. The grinding trench warfare and constant artillery barrages have drawn comparisons with World War One because of the massive casualties inflicted on both sides.
Wagner head Yevgeny Prigozhin said his forces, who have played a major role in Russian advances in the east, were pressing on with their encirclement of Bakhmut.
"In Bakhmut, the larger part, more than 80% is now under our control, including the whole administrative center, factories, warehouses, and the administration of the city," he said in a video posted by a Russian military blogger.
The Russian-installed head of Donetsk region, one of four areas declared annexed by Moscow last September, said Russian forces had backed Ukrainian defenders into a corner.
"In the western areas where their units are dug in, they have no choice other than coming forward and giving themselves up," Russian news agencies quoted Denis Pushilin as telling state television.
Serhiy Cherevatyi, a spokesman for Ukraine's Eastern Military Command, said the situation in Bakhmut was under control, adding Kyiv would not allow its troops to be encircled.
Deputy Ukrainian Defense Minister Hanna Malyar acknowledged that Bakhmut "took the main hit" in fighting. But Russian forces, she said, "are generally losing to us in street battles so they are simply destroying all buildings and structures".
Kyiv says it needs more and better Western weapons to beat Russia, and senior Ukrainian officials pressed ahead with their bid to persuade allies to open up stockpiles.
Ukrainian Foreign Minister Dmytro Kuleba on Tuesday tweeted that he had received assurances of "ironclad" U.S. support from Secretary of State Antony Blinken.
And Canadian Prime Minister Justin Trudeau, hosting his Ukrainian opposite number on Tuesday, pledged fresh supplies of assault rifles, machine guns and ammunition.
Prigozhin has previously made claims about Russian control of the mining city that turned out to be premature, but Ukraine acknowledges the situation in what it calls "fortress Bakhmut" is now very difficult.
Russia says the capture of Bakhmut will open up the possibility for future offensives across Ukraine, while Kyiv and the West say the now smashed city has only symbolic importance.
Ukrainian President Volodymyr Zelenskyy has vowed to keep defending Bakhmut, but last week acknowledged troops could be pulled back if they were in danger of being encircled.
Russian forces have made only incremental gains in their advance through eastern Ukraine. Kyiv says opposing forces have sustained heavy losses after launching a mobilization of some 300,000 men late last year.
The lower house of the Russian parliament on Tuesday moved to close loopholes in the draft by introducing electronic military draft papers for the first time in its history. Government officials said there were no plans to compel more men to fight in Ukraine.
