Despite reports that U.S. and Iranian negotiators had reached a memorandum of understanding, a May 29 report from Tasnim News, which is linked to Iran's Islamic Revolutionary Guard Corps, said the text had not been finalized or approved. Meanwhile, Israeli sources said Iranian Supreme Leader Mojtaba Khamenei has not yet approved the MoU, and U.S. Vice President JD Vance suggested there was language in the MoU that could prompt President Donald Trump to reject it.