The fast-moving developments in Trump's near-back-to-back summits with the heads of Russia, Ukraine and European powers have highlighted a pair of repeated sticking points.

President Trump and European leaders met for a one-of-a-kind summit at the White House on Monday to push toward a peace deal between Russia and Ukraine. But by the end of a marathon day of meetings, details on what such an agreement might entail remained elusive.

Ukraine will promise to buy $100bn of American weapons financed by Europe as part of a deal to obtain US guarantees for its security after a peace settlement with Russia, according to a document seen by the Financial Times.

"If everything works out well today we'll have a trilat and I think there will be a reasonable chance of ending the war when we do that." President Trump answers questions of the future of the Ukraine-Russia war before meeting with Ukrainian President Volodymyr Zelenskyy and other European and NATO leaders.

President Volodymyr Zelenskiy accused Russia of unleashing "cynical" attacks on Ukrainian civilians that he said were designed to undermine his talks with U.S. President Donald Trump in Washington later on Monday.

Ukrainian officials announced 13 people died and several more were injured in Russian attacks launched before world leaders meet at the White House on Monday.

If a peace between Russia and Ukraine is reached, there is no downside to oil prices since Russian oil is "already flowing at full throttle,” said Manish Raj, managing director at Velandera Energy Partners.

President Volodymyr Zelensky of Ukraine and seven European leaders met with President Trump at the White House yesterday for crucial talks on ending the war in Ukraine. Trump said he would call President Vladimir Putin of Russia following the White House talks to discuss whether to hold a U.