The agreed-upon framework deal is a preliminary step toward a comprehensive agreement that will be subject to ratification by Ukraine's parliament.

A White House official on Wednesday raised doubts about whether an invitation to Ukraine President Volodymyr Zelenskiy to meet U.S. President Donald Trump would make sense given Zelenskiy's comments that a minerals deal is not complete.

The U.S. and Ukraine are near a deal to hand valuable mineral rights to the U.S., an agreement the Trump administration has sought as compensation for military aid to fight off Russia’s invasion, people familiar with the matter said.