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

Ukraine managed to wrangle some more favorable terms out of the United States before signing the long-awaited minerals deal on Wednesday.

After months of bad-tempered exchanges and a bust-up on live TV at the White House, the Trump administration finally struck an agreement with Ukraine that grants the US privileged access to the embattled country’s natural resources,