Heraldo de Madrid - Putin warns West over arms deliveries to Ukraine

His threats came after Ukrainian President Volodymyr Zelensky warned that the Kremlin was consolidating its forces for a fresh offensive.

Zelensky was speaking in Kyiv beside EU chief Ursula von der Leyen, who said the bloc was looking to finalise fresh sanctions against Russia by February 24, exactly one year after Putin ordered troops into Ukraine.

In the southern Russian city of Volgograd, Putin said: "It's unbelievable but true. We are again being threatened by German Leopard tanks."

He was speaking at a ceremony commemorating the Red Army's victory against Nazi troops 80 years ago in Stalingrad, as the city was then known.

"We have something to respond with," he added. "A modern war with Russia will be completely different."

His spokesman Dmitry Peskov elaborated, saying that as Western deliveries for Ukraine increased to include more powerful weapons, Russia would respond in kind, utilising the fullest of its military capacity.

Ukraine this month secured promises from the West for deliveries of modern battle tanks to fight Russian forces and Kyiv is now asking for long-range missile and fighter jets.

- Sanctions to 'erode' Russian economy -

Zelensky in Kyiv warned that Russia was already "concentrating" its forces to launch a new offensive to hit back against Ukraine and other pro-democratic countries.

"It is preparing to try to take revenge, not only against Ukraine, but against a free Europe and the free world," Zelensky told a joint press conference with von der Leyen, who announced the timeline for the fresh sanctions.

Putin has insisted that Russia is weathering the barrage of sanctions imposed by Ukraine's Western allies and will continue its military campaign in Ukraine.

But von der Leyen said existing sanctions were already "eroding" Russia's economy, "throwing it back by a generation". She estimated that an existing oil price cap alone was costing Moscow around 160 million euros every day.

"We will introduce with our G7 partners an additional price cap on Russian petroleum products and by the 24th of February -- exactly one year since the invasion started -- we aim to have the 10th package of sanctions in place," she said.

Zelensky called on Europe to implement sanctions quickly, saying the West should take steps to clamp down on the circumvention of sanctions.

"The terrorist state is increasing the pace of adaptation to sanctions instead," he said. "It should be resolved."

Von der Leyen arrived in Kyiv on Thursday with a team of commissioners and the EU's most senior diplomat Josep Borrell ahead of a Ukraine-EU summit on Friday in the war-torn country, which is seeking EU membership.

- The 'Russia question' -

Russian Foreign Minister Sergei Lavrov claimed the EU and specifically von de Leyen had called for Russia to be defeated so its economy would be devastated for decades.

"Is this not racism, not Nazism -- not an attempt to solve 'the Russian question'," Lavrov said, an allusion to Nazi Germany's mass murder of Jews.

Last week, the French foreign ministry denied that France or its allies were fighting a war against Russia, following a Western decision to send heavy tanks to Ukraine.

Lavrov's comments echoed Putin, who has frequently drawn parallels between what he calls Moscow's "special military operation" in Ukraine and the Soviet war against Nazi Germany.

Putin launched his intervention last year, saying that Russia needed to "de-Nazify" Ukraine.

Von der Leyen's trip comes one day after Kyiv raided the homes of an oligarch and public officials as part of efforts to ease Western concerns about graft in the wake of embezzlement probes.

"I'm comforted to see that your anti-corruption bodies are on alert and effective in detecting corruption cases," von der Leyen said.

- 'How can I leave?' -

Kyiv this week launched coordinated searches of residences linked to oligarch Igor Kolomoisky and a former interior minister as well as tax offices in the capital.

On the front line, Russian forces are pressing Ukrainian troops in the eastern Donetsk region, now the epicentre of fighting.

Moscow has been trying to seize control of Bakhmut in the industrial region for months in what has become the longest and bloodiest battle of the invasion.

Residents who remain in the war-scarred town told AFP they will not budge if the Russians arrive.

"How could I leave?" said 75-year-old Natalia Shevchenko.

She said she spends so much time sheltering from bombardments in her basement that she feels "like a mole" as she steps out into the light and her eyes adjust.

"Don't worry," she told AFP as shells whistled in the background. "They're far away. I've now learnt where they're going."

A 44-year-old woman was killed by Russian shelling of a residential building in a village in the Black Sea region on Thursday, local officials said.

W.Hidalgo--HdM