President Donald Trump in Washington, May 30, 2025 and Iranian supreme leader Ayatollah Ali Khamenei in Tehran on June 4, 2025. Reuters/AFP via Getty Images

The future of high-stakes negotiations over Iran's nuclear program remains shrouded in uncertainty as the U.S. and Iran publicly clash over the terms of an interim agreement proposed by the Trump administration that is intended to pave the way for a longer-lasting deal.

Iran's supreme leader, Ayatollah Ali Khamenei, slammed that proposal during an address on Wednesday, saying it "contradicts our principle of power by 100%" and vowing that Iran would not agree to stop enriching uranium on its own soil, calling it "a key tool in the nuclear program."

The Iranian foreign minister, Seyed Abbas Araghchi, succinctly underscored Iran's

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