The premier also made clear that the UK intends to push ahead with North Sea oil and gas development - and potentially fracking - saying the country will 'make better use of our own naturally occurring hydrocarbons'.
Vladimir Putin gave a a tub-thumping address yesterday to tens of thousands of Russians gathered at Moscow's world cup stadium, celebrating his invasion of Ukraine in 2014 and drumming up support for his new war

The International Criminal Court last month issued an arrest warrant for Russian President Vladimir Putin and Russia's children's rights commissioner, Maria Lvova-Belova, accusing them of abducting children from Ukraine.
An FBI probe was launched Friday to determine the source of the leak, however a senior official told The New York Times that tracking down the perpetrator could prove difficult because a large number of officials have the security clearances needed to access the information.
While the breach underscored America's ability to infiltrate Moscow's upper echelons, it has also sparked fears that Russian intelligence may now have a clearer understanding of exactly what the US does and does not already understand, providing an opportunity to cut off sources of information.
'I realise I hadn't had an education, and I tried some side jobs, 9-5 jobs and none of it worked. So I did a bit of study on how to work in something you love. That was social media, and it's really started to take off in the last year.'
Lvova-Belova told a news conference earlier this week that her commission acted on humanitarian grounds to protect the interests of children in an area where military action was taking place and had not moved anyone against their will or that of their parents or legal guardians, whose consent was always sought unless they were missing.
Notably, the documents covered intimate details about the spread of US military spying across the globe. Per multiple reports, this included classified information about Iran's nuclear program and North Korea's missile systems.
However, the intelligence breach, which included reports from late February to early March but have only been leaked online in recent days, also unearthed probes in a variety of nations, including South Korea, Iran and the UK, per the .
MOSCOW, April 8 (Reuters) - Hundreds of mourners, including the leader of Russia's Wagner private militia group, attended the funeral on Saturday of pro-war blogger Vladlen Tatarsky, who was killed on April 2 in a cafe bomb blast that Moscow has blamed on Ukraine.
KYIV, April 8 (Reuters) - More than 30 children were reunited with their families in Ukraine this week after a long operation to bring them back from Russia, where they had been taken from occupied areas during the war, a humanitarian group said on Saturday.
The 40-year-old Tatarsky, whose real name was Maxim Fomin, was accorded military honours including a gun salute and an army band at the funeral at Moscow's Troyekurovskoye cemetery due to his past participation in military operations in eastern Ukraine alongside Moscow-backed separatists battling Kyiv's forces.
Prigozhin is also known for his sharp criticism of Russia's top brass over their performance in Ukraine. The Wagner group has been spearheading efforts in recent months to capture the city of Bakhmut in Ukraine's eastern Donetsk region.
The three children said they had been separated from their parents who were pressured by Russian authorities to send their children to Russian summer camps for what was billed as two weeks, from occupied parts of Kherson and Kharkiv regions.
In Ukraine, the documents suggested a misalignment between US and Ukrainian military strategies, with intelligence reports appearing to show the US continues to spy on top military and political leaders in the region.
Kateryna Rashevska, a lawyer from a Ukrainian NGO called Regional Centre for Human Rights, told the briefing they were collecting evidence to build a case that Russian officials deliberately prevented return of the Ukrainian children back to their country.