President Donald Trump welcomed Ukrainian President Volodymyr Zelenskyy to the White House for a high-stakes meeting as the U.S. president pushed for a deal to end Moscow's war on its neighbor. A host of European leaders joined the pair.

Coming just days after a disappointing summit with the Russian president, Vladimir Putin, in Alaska, the pressure was on to make headway in a years-long conflict that the US president once said he could solve in 24 hours.