The UK will supply enriched uranium to Ukraine for its nuclear power stations and impose new sanctions against Russia, Prime Minister Keir Starmer said ahead of a G7 summit session Tuesday.

Denouncing Russia’s ‘barbaric strikes’ on Ukraine, the UK is ‘stepping up’ by ‘choking off the revenues that fuel Putin’s war and powering Ukraine through the winters ahead’, his office quoted Starmer as saying, referring to Russian President Vladimir Putin.

Ukrainian President Volodymyr Zelensky was due to attend the summit of seven leading world powers in the French resort town of Evian-les-Bains on Tuesday, with allies looking to tilt the balance in Kyiv’s favour after over four years of war.

His appearance comes after a Russian barrage of missiles early Monday killed at least 11 people across Ukraine and sparked a fire at one of the most important Orthodox monasteries in the capital.

Starmer’s office said the energy deal would ‘power Ukraine for the next two years’.

The British premier under pressure at home after his defense minister resigned in a row over military spending last week will tell leaders at the session that ‘the G7 should collectively go further to ensure Ukraine secures the just and lasting peace it deserves’.

‘We will stand with Ukraine for as long as it takes and this announcement reinforces that,’ Starmer said, according to his office.

Some £210 million ($282 million) worth of export finance will allow the UK-based Urenco to supply enriched uranium to Ukraine’s nuclear power producer, Energoatom, it said.

The new sanctions ‘will choke Russia’s war effort across multiple fronts’ by targeting Russia’s illicit shadow fleet and finance networks used to circumvent sanctions, Starmer’s office said.

The G7 group of leading powers will hold talks on Tuesday with President Zelensky on Ukraine with US leader Donald Trump saying that “maybe we can do something” after over four years of war sparked by Russia’s full-scale invasion.

European leaders hosted by President Emmanuel Macron will be keen to remind Trump of the importance of pushing Russia to accept peace on Kyiv’s terms and not pressure Ukraine to accept concessions to Moscow.

Zelensky will attend a special morning session of the summit in the French spa town of Evian devoted to Ukraine, which will be followed later in the day by a session on Iran to be attended by Arab leaders. (AFP)