Plans are on hold for US President Donald Trump to sit down with Russian leader Vladimir Putin to talk about resolving the war in Ukraine, a US official said Wednesday.
The meeting had been announced last week. It was supposed to take place in Budapest, although a date had not been set.
The decision was made following a call between US Secretary of State Marco Rubio and Russian Foreign Minister Sergey Lavrov.
The official wasn't authorised to speak publicly and spoke on condition of anonymity.
Kremlin spokesperson Dmitry Peskov indicated Wednesday there was no sense of urgency for Trump and Putin to meet, saying that "preparation is needed, serious preparation".
The back-and-forth over Trump's plans is the latest bout of whiplash caused by his stutter-step efforts to resolve a conflict that has persisted for nearly four years.
Ukrainian President Volodymyr Zelensky and European leaders accused Putin of stalling for time to continue his invasion as diplomatic efforts took place. They also said they opposed any push to make Kyiv surrender land captured by Russian forces in return for peace, as Trump has on occasion suggested.
Eight European leaders as well as senior European Union officials said in a joint statement they intend to go ahead with plans to use Moscow’s billions of dollars of frozen assets abroad to help Kyiv win the war, despite some misgivings about the legality and consequences of such a step.
Zelensky noted that Putin returned to diplomacy and called Trump last week when facing the possibility that the US would supply Ukraine with long-range Tomahawk missiles.
But "as soon as the pressure eased a little, the Russians began to try to drop diplomacy, postpone the dialogue," Zelensky said Wednesday in a Telegram post.
"We need to end this war, and only pressure will lead to peace," he said.
The leaders' statement laid down a marker by saying the leaders "remain committed to the principle that international borders must not be changed by force".
Trump last month reversed his long-held position that Ukraine would have to concede land and suggested it could win back all the territory it has lost to Russia. However, after a phone call with Putin last week and a subsequent meeting with Zelensky on Friday, Trump shifted his position again and called on Kyiv and Moscow to "stop where they are" in the more than three-year war.
On Sunday, Trump said that the industrial Donbas region of eastern Ukraine should be "cut up," leaving most of it in Russian hands.
Trump said Monday that while he thinks it is possible that Ukraine can ultimately defeat Russia, he's now doubtful it will happen.
Ukrainian and European leaders are trying hard to keep Trump on their side.
"We strongly support President Trump’s position that the fighting should stop immediately, and that the current line of contact should be the starting point of negotiations," the statement said. "We can all see that Putin continues to choose violence and destruction."
The dynamics of Trump's engagement with Europe's biggest conflict since World War II have zigzagged as he searches for a peace deal.
Russia occupies about one fifth of Ukraine, but carving up their country in return for peace is unacceptable to Kyiv officials.
Also, a conflict frozen on the current front line could fester, with occupied areas of Ukraine offering Moscow a springboard for new attacks in the future, Ukrainian and European officials fear.
The statement by the leaders of Ukraine, the UK, Finland, France, Germany, Italy, Norway, Poland, Denmark and EU officials came early in what Zelensky said Monday would be a week that is "very active in diplomacy".
More international economic sanctions on Russia are likely to be discussed at an EU summit in Brussels on Thursday.
"We must ramp up the pressure on Russia’s economy and its defence industry, until Putin is ready to make peace," Wednesday's statement said.
On Friday, a meeting of the Coalition of the Willing — a group of 35 countries who support Ukraine — is due to take place in London.
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