Iranian President Hasan Rouhani accused the U.S. Congress of meddling in sensitive negotiations on the fate of the country’s nuclear program, signaling potential new obstacles in the way of a final deal.

“What the U.S. Senate says, or what the U.S. House of Representatives want, or what the extremists in the U.S. are looking for, or what the U.S. mercenaries in the region say, it doesn’t have anything to do with our government or our people,” he said in a speech aired on state television on Wednesday.

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