Ukrainian President Volodymyr Zelenskyy has urged the United States to expand sanctions on Russian oil from two companies to the whole sector and appealed for long-range missiles to hit back at Russia.

Mr Zelenskyy was in London for talks with two dozen European leaders who have pledged military help to shield his country from future Russian aggression should a ceasefire be imposed after more than three years of war.

The meeting hosted by British Prime Minister Keir Starmer aimed to step up pressure on Russian President Vladimir Putin, adding momentum to recent measures including a new round of sanctions from the US and European countries on Russia's vital oil and gas export earnings.

The talks also addressed ways to help protect Ukraine's power grid from Russia's almost daily drone and

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