The situation on Ukraine's eastern front lines is getting tough, President Volodymyr Zelensky has said.
Ukrainian troops are facing a very difficult situation in three heavily contested towns in Donetsk - Bakhmut, Vuhledar and Lyman - Mr Zelensky said.
The UK's defence ministry said Ukrainian soldiers are becoming isolated in embattled Bakhmut.
It comes as Ukraine's defence minister reiterated the view that a new Russian offensive is expected this month.
At a news conference, Oleksiy Reznikov said not all Western weaponry will have arrived by then, but Ukraine had reserves to hold off Russian forces.
Mr Reznikov said he expects the anticipated Russian offensive to prioritise taking the whole of the eastern Donbas region and create a land corridor across the areas it occupies, including Crimea, by launching offensives in the south and east of Ukraine.
The defence minister also confirmed that troops will start training on German-made Leopard tanks from Monday.
Mr Reznikov also said Ukraine had negotiated the supply of new long-range missiles with a 90-mile (150km) range and pledged not to use them against Russian territory - only against Russian units in occupied areas of Ukraine.
The head of Russia's notorious Wagner group said there are fierce battles for every street in some areas of Bakhmut.
Russian forces have been attempting to seize control of the town for months - making it the longest battle since Russia invaded Ukraine almost a year ago.
Taking the area is important to Russia in furthering its aim of controlling the whole of the Donbas region in the country's east. It would also signify a turnaround in Russia's fortunes after it lost ground in Ukraine during recent months.
Despite the flow of Western weapons to Ukraine, Russia has made gains around the Bakhmut area in recent days, as Russia's army throws more and more soldiers into combat.
Speaking during his nightly address, President Zelensky said: "During the 346 days of this war, I often had to say that the situation at the front was tough. And that the situation is getting tougher.
"Now is that time again. A time when the occupier throws more and more of its forces to break our defences."
The UK's Ministry of Defence said Ukrainian forces in Bakhmut are getting increasingly isolated as the Russians continue to make small advances in their attempt to encircle the town.
It added that the two main roads into Bakhmut were likely being threatened by direct fire.
Russia's paramilitary mercenary group Wagner have led much of the fighting in the area.
The head of the force, Yevgeny Prigozhin, confirmed that there are "fierce battles for every street, every house, every stairwell" in northern parts of Bakhmut.
Responding to reports that Ukrainian forces had retreated from the town, he said this is not the case and Ukrainian soldiers are "fighting to the last".
The battles on the front line come as more missiles hit parts of eastern Ukraine
In other developments:
- In the north-eastern city of Kharkiv, five people were wounded after strikes hit civilian buildings in the city, local authorities have said.
- Five others were injured in the Donetsk region during rocket attacks, according to regional leader Pavlo Kyrylenko.
Latest Stories
-
Ghana Shippers Authority assures shippers of no delays at ports despite internet services disruptions
23 mins -
Championing change: The importance of diversity in shaping Africa’s future (By Laila Bastati)
24 mins -
African Games 2023: ‘Event didn’t look possible a few months ago’ – Former Nigeria Sports Minister marvelled at Ghana’s efforts
28 mins -
African states must respect constitutional rule – Akufo-Addo
33 mins -
Aaron Taylor-Johnson: Speculation mounts again over next James Bond
50 mins -
Trina Solar, SOLA and Wilson Bayly Holmes Ovcon (WBHO) Signed Partnership to Launch 195MW Springbok Utility Project Using Vertex N Modules
53 mins -
Unemployment emerges as the biggest threat to Ghana’s GDP – World Economic Forum
1 hour -
Kofi Adjorlolo calls out TV stations showing Nigerian movies without authorisation
1 hour -
African Games 2023: Ghana defeat Nigeria in women’s hockey to book final
1 hour -
I hope to raise money to buy Chelsea at the blind side of the public – Cheddar
1 hour -
Nketiah Foundation Cup 2024: Joma Smart FC win inaugural edition of football tournament
2 hours -
African Games 2023: Ghana to compete in four medal events on day two
2 hours -
Commercial Bank glitch lets customers withdraw millions
2 hours -
Six universities now offer AICPA & CIMA’s CGMA Finance Leadership Program in Ghana
2 hours -
On Visit to Dhobley, African Union (AU) Special Representative Emphasizes Collaboration for Peace in Somalia
2 hours