A draft of an agreement calling for Ukraine to hand over to the United States revenue from natural resources includes new language referring to security guarantees, a provision Kyiv had pressed for vigorously in negotiations.

But the reference is vague and does not signal any specific American commitment to safeguarding Ukraine’s security.

A copy of the agreement obtained Wednesday by The New York Times included a sentence stating that the United States “supports Ukraine’s effort to obtain security guarantees needed to establish lasting peace.” Previous drafts did not have the phrase on security guarantees.

It was not clear whether the draft, dated Tuesday, was a final version.

A Ukrainian official briefed on the draft, and several people in Ukraine with knowledge of the talks, confirmed that wording on security had been included in the document. They spoke on the condition of anonymity to discuss private negotiations.

The agreement is seen as opening the door to possible continued backing from the United States under the Trump administration, either as aid for the war effort or as enforcement of any cease-fire. Officials in the United States and Ukraine said on Tuesday that a version had been accepted by both sides.

President Volodymyr Zelensky of Ukraine is expected to travel to Washington on Friday to sign the agreement with President Trump. The draft obtained by The Times showed Scott Bessent, the U.S. Treasury Secretary, and Yulia Svyrydenko, Ukraine’s economy minister, as the initial signatories.