US Vice President JD Vance on Thursday (May 28) told reporters that Washington was "not there yet" with Iran but that the parties were close, adding that the U.S. was in a position where it could substantially set back Tehran's nuclear program.

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Vice President Vance said the U.S. and Iran have made “a lot of progress” in their negotiations, but that it wasn’t clear “when or if” President Trump was going to sign. Iran said…