The EU and Britain have announced new sanctions against Russia without waiting for Washington to join them, a day after President Donald Trump's phone call with Vladimir Putin brought about neither a ceasefire in Ukraine nor fresh US sanctions.
London and Brussels said their new measures would zero in on Moscow's "shadow fleet" of oil tankers and financial firms that have helped it avoid the impact of other sanctions imposed over the war.
"Sanctions matter, and I am grateful to everyone who makes them more tangible for the perpetrators of the war," Ukraine's President Volodymyr Zelensky wrote on Telegram.
He said it "would be good" if the US added its help, adding: "It is important that America remain involved in the process of bringing peace closer."
The sanctions were unveiled without an immediate announcement of corresponding steps from Washington, despite intense public lobbying from European leaders for the Trump administration to join them if Russia rejected a ceasefire.

"We have repeatedly made it clear that we expect one thing from Russia - an immediate ceasefire without preconditions," German Foreign Minister Johann Wadephul said on the sidelines of a meeting with EU counterparts in Brussels.
Russia had not accepted a ceasefire, "we will have to react," he said. "We also expect our US allies not to tolerate this."
Mr Trump has told reporters that he was deliberating over what actions to take, but gave no further details.
"We're looking at a lot of things, but we'll see," he said.
In a two-hour conversation with Mr Putin yesterday, the US president dropped his earlier insistence on an unconditional 30-day ceasefire and signalled that the war he once promised to end in 24 hours was no longer his to fix - a message that leaves Ukraine vulnerable and its allies worried.
Asked yesterday why he had not imposed fresh sanctions to push Moscow into a peace deal, Mr Trump said that could make the situation worse and affect the chance of a deal, while adding: "But there could be a time where that's going to happen."
Mr Trump said after talking to Mr Putin he had told Mr Zelensky and European leaders that Russia and Ukraine would immediately start negotiations on conditions for a ceasefire, a process Russia said would take time.
Russia and Ukraine held their first direct talks in more than three years on Friday at Mr Trump's behest, but failed to agree a truce after Moscow presented conditions that a member of the Ukrainian delegation called "non-starters".
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Pope willing to host talks
Italian Prime Minister Giorgia Meloni has said that Pope Leo XIV had confirmed to her his willingness to host in the Vatican the next round of negotiations to try to end the war.
US Secretary of State Marco Rubio told a congressional hearing that Mr Putin had not received any real concessions in the US effort to initiate talks and existing US sanctions on Russia remained in place.
"The president ... believes that right now, you start threatening sanctions, the Russians will stop talking, and there's value in us being able to talk and drive them to get to the table. We'll see," Mr Rubio said.
Ukraine says it is ready for an immediate ceasefire. The Europeans say Russia's insistence on talks first is proof that Mr Putin, who started the war by invading his neighbour in 2022, is not prepared to end it.
European Commission President Ursula von der Leyen said a further package of sanctions was being prepared.
"It's time to intensify the pressure on Russia to bring about the ceasefire," she wrote on X.
Just off the phone with @ZelenskyyUa.
— Ursula von der Leyen (@vonderleyen) May 20, 2025
We are coordinating closely on the next steps.
Europe has just adopted its 17th package of hard-biting sanctions.
An 18th package is being prepared with further hard hitting sanctions.
It's time to intensify the pressure on Russia to…
Russia says it will not bow to ultimatums
Russian Foreign Ministry spokeswoman Maria Zakharova said Russia would never bow to what she called ultimatums.
Mr Putin said yesterday that Moscow was ready to work with Ukraine on a memorandum about a future peace accord. "Now, accordingly, the ball is in Kyiv's court," Ms Zakharova said.
Brussels and London signalled they have not given up hope of persuading Washington.
"Let us push Vladimir Putin to put an end to his imperialist fantasy," France's Foreign Minister Jean-Noel Barrot said.
Britain's Foreign Minister David Lammy said "delaying peace efforts will only redouble our resolve to help Ukraine to defend itself and use our sanctions to restrict Putin's war machine".
The latest sanctions are aimed mainly at cracking down on a shipping fleet Russia uses to export oil, circumventing a $60 a barrel price cap imposed by the G7 group of industrialised countries to limit Russia's income.
Britain and the EU said they would also work to lower the cap, which imposes far less of a discount on Russian oil now that global prices have fallen this year.