Republican senators demand answers from Kerry on Iran

A group of 31 senators warned Secretary of State John KerryJohn KerryThe Iran deal is fragile — here's what the Biden administration can do Republican senators take aim at Paris agreement with new legislation The risk of China appeasement — redux MORE against making any nuclear concessions to Iran that would pose a threat to the U.S.

In a letter spearheaded by Sen. Mark KirkMark Steven KirkSenate majority battle snags Biden Cabinet hopefuls The Hill's Morning Report - Sponsored by Facebook - Senate makes SCOTUS nominee Barrett a proxy for divisive 2020 Senate Republicans scramble to put Trump at arm's length MORE (R-Ill.), the senators expressed grave concern over "troubling" reports that the administration is considering a deal that would allow Iranian nuclear centrifuges to be "disconnected" instead of "dismantled.

“We have learned that the United States and its P5+1 negotiating partners may now be offering troubling nuclear concessions to Iran in the hopes of rapidly concluding negotiations for a ‘deal’,” the lawmakers wrote to Kerry. “Given that a nuclear Iran poses the greatest long-term threat to the security of the United States, Israel, and other allies, we are gravely concerned about the possibility of any new agreement that, in return for further relief of U.S.-led international sanctions, would allow Iran to produce explosive nuclear material.”

In a statement Saturday, Kirk said Under Secretary of State Wendy Sherman and her team "are getting desperate, floating these so-called ‘creative solutions’ to hide the fact that they haven’t gotten Iran to agree to a single irreversible step to eliminate Iran’s nuclear weapons capability.”

As world leaders begin a new round of talks aimed at limiting Iran's nuclear program in exchange for sanctions relief, the deadline to reach a deal by Nov. 24 is just months away.

The letter was also signed by Sens. 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