After two years of war in Ukraine, there is no prospect of negotiations to find a breakthrough as Russian President Vladimir Putin, emboldened by the erosion of Western support for Kyiv, girds for a long conflict.

2024 will be another year of war because Ukraine is determined to keep on fighting to recapture territory, while Putin will only be satisfied with Kyiv's full surrender, analysts and diplomats say.

Putin may have signalled in this month's interview with right-wing US talk show host Tucker Carlson that Russia was interested in negotiations but this would be so much on Moscow's own terms that Kyiv would not countenance such talks.

"I don't see any negotiations taking place any time soon," said Fyodor Lukyanov, head of the Kremlin-linked Council on Foreign and Defense Policy think tank in Moscow.

"There's nothing they can negotiate about," he told AFP.

While the winter of 2022 was humiliating for Putin, who failed to take Kyiv within days, he has now regrouped and appears reinvigorated by Ukraine's unsuccessful counter-offensive, the prospect of Donald Trump returning to the White House in the November presidential election and the rise of the far-right in Europe.

"Wouldn't it be better to negotiate with Russia?" Putin told Carlson, urging the United States to discuss a deal that would allow Moscow to control 20 percent of Ukraine's territory.

"Sooner or later we'll come to an agreement anyway," he said.

In a symbolic gain for Moscow, the eastern Ukrainian town of Avdiivka fell to Russian troops last week after months of battle.

Mykhailo Podolyak, an advisor to Ukrainian President Volodymyr Zelensky, reiterated Kyiv's long-held position that no negotiations were possible until Russia withdraws from occupied territories.

"In any other case, negotiations are impossible," Podolyak told AFP.

A European diplomat, speaking on condition of anonymity, also ruled out any talks under the current circumstances.

"Negotiations can only take place when Ukraine is in a position of strength on the ground," said the -

'Take action' -

But after two years of resisting the invasion by its much larger neighbour, Ukraine's troops are exhausted.

A Republican holdup on US military aid and Europe's inability to ramp up weapons supplies fast enough contribute to a sense of uncertainty and gloom in Kyiv.

Cracks are beginning to emerge, with Zelensky's recent decision to part ways with popular army chief Valery Zaluzhny seen as a sign of the first serious split within the leadership.

By contrast, Russia has withstood the initial shock of unprecedented Western sanctions and put its economy on a war footing, ramping up production and recruitment and jailing critics of the invasion.

Opposition leader Alexei Navalny, who has urged Russians to protest against the war, died suddenly in his Arctic prison last week. His team says he was murdered.

Alexander Gabuev, director of the Carnegie Russia Eurasia Center, warned that Ukraine must urgently reverse course by mobilising more troops, securing more Western aid and overcoming political tensions in Kyiv.

"The main question is whether Ukraine and its allies will be able to take action in the next six months to change the current trajectory," he told AFP.

If the current problems persist, "Ukraine could start losing the war in 2024".

The US election campaign has already affected the delivery of more aid to Ukraine, with Trump pushing an isolationist "America First" policy.

US officials privately say that little might be decided before the United States elects its new president in

 - 'Late in the day' -

Putin appears to be awaiting the result of the US election too.

"My expectation is that Putin won't make peace or a meaningful peace before he sees the result of our election," a senior US official said.

Trump has claimed he would be able to end the war in Ukraine "in 24 hours" if re-elected.

Zelensky has called such remarks "very dangerous".

"Nobody knows what Trump's foreign policy will be, starting with himself," said former French diplomat Marie Dumoulin.

European leaders increasingly realise that if Putin is allowed to win in Ukraine, he could then be tempted to test NATO's defences.

"We have a 'Russian problem' ahead of us and for us it's a huge challenge," said European Union foreign policy chief Josep Borrell.

It will take time for the continent's defence industry to step up ammunition production but the West could still turn things around, said analysts.

"For Europeans in particular, this means putting their money where their mouth is," said Gustav Gressel of the European Council on Foreign Relations.

"The acquisition of ammunition, missiles, combat vehicles and spare parts is severely behind schedule."

"Although late in the day, Europeans can still correct this course."

© Agence France-Presse