Russian forces stepped up mortar and artillery attacks on the recently liberated city of Kherson in southern Ukraine on Wednesday, Ukraine’s military said, while also exerting pressure along frontlines in the east.

Russia fired 33 missiles from multiple rocket launchers at civilian targets in Kherson in the 24 hours to early Wednesday, the General Staff of Ukraine’s Armed Forces said in its morning report. Russia denies targeting civilians.

Heavy fighting also persisted around the Ukrainian-held city of Bakhmut, now largely in ruins, in the eastern province of Donetsk, and to its north, around the cities of Svatove and Kreminna in Luhansk province, where Ukrainian forces are trying to break Russian defensive lines.

Britain’s defence ministry said in its update on Ukraine that Russia had likely reinforced the Kreminna section of the frontline as it is logistically important to Moscow and has become relatively vulnerable following Ukrainian advances further west.

There is still no prospect of talks to end the war, now in its 11th month.

Ukrainian President Volodymyr Zelenskiy is vigorously pushing a 10-point peace plan that envisages Russia fully respecting Ukraine’s territorial integrity and pulling out all its troops.

But the Kremlin rejected the plan, reiterating its stance that Kyiv must accept Russia’s annexation – announced in September after “referendums” rejected by Ukraine and most other nations – of four Ukrainian regions: Luhansk and Donetsk in the east, and Kherson and Zaporizhzhia in the south.

“There can be no peace plan for Ukraine that does not take into account today’s realities regarding Russian territory, with the entry of four regions into Russia,” Kremlin spokesman Dmitry Peskov said.

Zelenskiy told parliament to remain united in the face of Russia’s invasion and praised Ukrainians for helping the West “find itself again”.

“Our national colours are today an international symbol of courage and indomitability of the whole world,” he said in the 45-minute behind-closed-doors speech.

Russian Foreign Minister Sergei Lavrov said Russia wanted the situation in Ukraine resolved as quickly as possible, with a priority on defending civilians and saving soldiers’ lives, TASS news agency said.

It quoted Lavrov as saying Russia would beef up its troops and technological capabilities in Ukraine. He said that Moscow’s mobilised troops had undergone “serious training” and while most of them were now on the ground, the majority were not yet at the front.

“We are engaged in activities that will allow us to work far more efficiently in these territories in the near future,” TASS quoted him as saying.

Russian forces abandoned Kherson city last month in one of Ukraine’s most significant gains of the war. The Kherson region, at the mouth of the mighty Dnipro River, serves as a gateway to Russian-annexed Crimea.

The joy of Kherson residents over the city’s liberation has quickly given way to fear amid relentless Russian shelling from the east bank of the Dnipro, and many have since fled.

Russian forces shelled the maternity wing of a hospital in Kherson, Kyrylo Tymoshenko, Zelenskiy’s deputy chief of staff, said on Telegram. No one was hurt and the staff and patients had been moved to a shelter, he added.

TV footage showed workmen replacing shattered windows with sheets of board amid the rubble of damaged brick walls. A baby’s picture hung in an empty room and beds and hospital equipment stood empty and unused.

A Russian strike killed at least 10 people and wounded 58 in Kherson last Saturday, Ukraine said.

In Wednesday’s report, Ukraine’s General Staff also reported further Russian shelling in Zaporizhzhia region and in the Sumy and Kharkiv regions of northeast Ukraine.

Reuters was unable to verify the battlefield reports.

“There has been very little change in terms of the frontline but pressure from the enemy has intensified, both in terms of the numbers of men and the type and quantity of equipment,” Ukrainian military analyst Oleh Zhdanov said.

Putin called his invasion of Ukraine a “special military operation” to demilitarize his neighbour, which he said posed a threat to Russia.

The war has caused the deaths of tens of thousands of Ukrainian civilians and service personnel on both sides, the devastation of Ukrainian cities and towns and the flight of millions from their homes. It has also disrupted the global economy, driving up energy and food prices.

Russian Prime Minister Mikhail Mishustin said on Wednesday that the country’s economy, battered by Western sanctions, shrank by more than 2% over the past 11 months.

On Tuesday, Putin retaliated against a price cap of $60 per barrel of Russian oil imposed by the West on Dec. 5, saying Moscow would ban oil sales to nations that implement it.

The cap, unseen even in the times of the Cold War between the West and the Soviet Union, is aimed at crippling Russia’s military efforts in Ukraine – without upsetting markets by actually blocking its supply of oil.

Russia is the world’s second-largest oil exporter after Saudi Arabia, and any actual disruption to its sales would have far-reaching consequences for global energy supplies.

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