"Iran signaled Monday it would be willing to halt uranium enrichment for up to five years, an offer the Trump administration rejected, according to two senior Iranian officials and one U.S. official who spoke to the Times."
"The U.S. position, shaped in part by Vice President JD Vance, calls for a much longer suspension of about 20 years, a proposal Vance has previously advanced as necessary to permanently limit Iran's nuclear capabilities.: FULL STORY at above link.