Iran's Supreme Leader Ali Khamenei criticized the U.S. proposal for a nuclear deal on Wednesday and stressed Iran won't accept an agreement that makes its nuclear program dependent on other countries.

Iran’s supreme leader effectively rejected a U.S. proposal that allows temporary uranium enrichment in the country before ending it completely, forcing the White House to reconsider its approach as tensions mount over Iran’s nuclear program.

Iran's stance directly clashes with U.S. President Donald Trump 's position that Iran must halt all enrichment amid negotiations marked by uncertainty, despite having reached their most significant step since they began in April with a U.S. offer being delivered to Tehran last week.