Talks on restoring the Iran nuclear deal in Vienna, Austria on December 3, 2021. (Photo: Xinhua/VNA)

Iran’s top nuclear negotiator Ali Bagheri Kani tweeted Sunday that Iran endorses the proposed ideas, both in substance and form, that would pave the way for a swift conclusion of the Vienna negotiations, without giving any further details about Iran's position.

He said Iran is ready to conclude the negotiations in short order if the other side is ready to do the same. 

Last Tuesday, Borrell proposed a new draft text to revive the accord under which Iran will curb its nuclear program in return for relief from economic sanctions.