On snow-covered fields in central Ukraine, where some of the country's biggest proven lithium deposits are located, a small team of ecological consultants drop sensors into holes in the earth to measure water levels.

"The reality is that most lithium deposits in Ukraine were identified in the Soviet era and we haven't had any real updates or exploration for many years," said Federico Gay, anal

President Donald Trump and Vice President JD Vance berated Volodymyr Zelenskyy as Ukraine’s leader sought security guarantees as the U.S. tries to bring an end to the Russia-Ukraine war.

Edited by Jenna Moon in London and Brandon Livesay in New York, with Myroslava Petsa and Bernd Debusmann Jr reporting from the White House Zelensky says there should be "no compromises" with Vladimir Putin - but Trump says Kyiv will have to make concessions to reach a peace deal with Russia It was an extraordinary couple of hours.

British Prime Minister Keir Starmer will on Sunday host leaders of Italy, Germany, Poland and other allies - possibly including Ukrainian President Volodymyr Zelenskiy - to discuss their response to Donald Trump's push for peace in Ukraine.

British Prime Minister Keir Starmer's trip reflects Europe's concern over Trump's push to end the war in Ukraine and concede too much to Russian President Vladimir Putin.