Vance says details of US-Iran MOU still being finalized as Senate Republicans seek more information

Vice President JD Vance said the United States is still working out details for a memorandum of understanding intended to end the war in Iran, with Senate Republicans indicating skepticism and asking the White House for additional information before a planned ceremonial signing in Geneva.

The agreement was announced Sunday and is scheduled for a ceremony Friday in Geneva, according to The Guardian. Vance’s comments, also reported Friday, framed the document as centered on ending the conflict, while emphasizing that specifics had not yet been fully settled.

Republican senators have expressed tentative skepticism of the agreement Trump administration said it reached with Iran, The Guardian reported, pointing to what they described as gaps in the public record and the lack of finalized terms.

Vance said the “details” of the agreement still “to be worked out,” according to The Guardian’s account, implying that the memorandum of understanding was not the final, fully specified arrangement that lawmakers would want to review in full before any implementation begins.

Among the procedural concerns raised by Senate Republicans, as characterized by The Guardian, was the need for clearer disclosures from the White House about what the agreement would require, how it would be carried out, and what the United States would be committing to as part of ending the conflict.

The reporting also said the White House has faced calls to release more information from Republicans in the Senate as the ceremonial signing date approaches, indicating that lawmakers are seeking additional transparency before any further steps.

With the Geneva ceremony scheduled for Friday, the immediate next step is a clearer public accounting of what the memorandum of understanding contains and how it will be translated into concrete commitments, while congressional scrutiny continues alongside the administration’s diplomatic timeline.