Donald Trump has said Ukraine needs “a new leader”, a day after making a deal with Vladimir Putin to buy large quantities of Russian diesel.

The US president suggested Volodymyr Zelenskyy has not done enough to end the war with Russia and blamed him for high diesel prices in the US.

“I suggest they get a new leader who can make a deal because he could have made many deals and for some reason he never does,” Trump said.

Deals? It’s a fucking war! Speaking of … how’s Iran working out for you?

Andy Burnham reiterated his “complete solidarity” in a call with Volodymyr Zelenskyy and the leaders agreed to meet in person in the coming days to continue talks.

The prime minister said he recognised the past day had been “difficult for Ukraine” and the two talked about the importance of keeping up pressure on Russia, No 10 said.

The diesel deal disrupts four years of western financial pressure on Moscow and leaves Kyiv’s allies in Europe and Nato scrambling to adapt their sanctions plan. The EU’s top diplomat, Kaja Kallas, said the diesel deal “provides Moscow with more revenues to wage war”.

“This is not the time to ease pressure on Russia, and Europe won’t,” she said on Saturday. “On Monday, EU foreign ministers intend to approve the biggest set of sanctions listings targeting Russia’s war machine since the start of the war.” She was referring to plans to formally add 1,600 new individuals and entities to the EU’s sanctions blacklist.

This is going to end well.