The text of the agreement, made public by Ukraine’s government, made no mention of the security guarantees that Kyiv had long sought.

Kyiv and Washington on Thursday hailed a deal giving the United States preferential access to new Ukrainian minerals as a milestone which a top U.S. official said would allow President Donald Trump to negotiate with Russia on a stronger basis.

A draft of the deal said it would give Washington preferential access to new Ukrainian natural resources deals.