An American official close to Iran negotiations said that Iran will not be asked to sign on a final deal. PHOTO: NRG.

Negotiators from Iran and Western powers in Vienna working to hammer out a comprehensive nuclear agreement will not put their signatures to the final document, a U.S. official with knowledge of the negotiations told Israeli NRG news on Wednesday.

“A final deal, if we get to it, will be a ‘comprehensive joint plan of action’,” the official said, “the document itself will not be signed.”

The agreement, the official added, “will include a comprehensive political text and a number of technical annexes.” One of them, he said, is slated to become a text that will be presented to the U.N. Security Council for approval.

The official said the agreement currently under discussion would mimic the document negotiators presented in 2013 called the Joint Plan of Action, which also was left unsigned.

The source pointed out that the 2013 agreement included two different texts: a U.S. version and an Iranian version, which had substantial differences.