White House Chief of Staff Denis McDonough has announced that the UN Security Council would vote on any nuclear deal between Iran and the five permanent members of the UN Security Council plus Germany.

"Just as it is true that only Congress can terminate US statutory sanctions on Iran, only the Security Council can terminate the Security Council's sanctions on Iran," McDonough said.

"Because the principal negotiators of an arrangement with Iran are the five permanent members of the Security Council, we anticipate that the Security Council would pass a resolution to register its support for any deal and increase its international legitimacy," he added.

McDonough made the remarks in a letter to Senate Foreign Relations Committee Chairman Bob Corker on Saturday.

On Friday, US State Department spokeswoman Jen Psaki made similar remarks.

She said that the United Nations Security Council would endorse any final nuclear agreement between Iran and the P5+1 group.

"We would anticipate that, if we're able to reach a joint comprehensive Plan of Action between the P5+1 and Iran, an endorsement vote would be held by the UN Security Council," Psaki told reporters.

Iran and the P5+1 group -- the US, Britain, France, China, Russia, and Germany -- are currently working to complete the outlines of a nuclear deal by the end of March after they reached an interim agreement in November 2013.

The two sides have by the end of June to clinch a final agreement.

US Secretary of State John Kerry and Iranian Foreign Minister Mohammad Javad Zarif are in Switzerland on Sunday to hold new round of talks.

AGB/AGB