Iran's talks with world powers aimed at reinstating a 2015 nuclear deal will resume on Nov. 29, Iran's top nuclear negotiator, Ali Bagheri Kani, said on Wednesday, as Western concerns over Tehran's nuclear advances grow.

"In a phone call with @enriquemora_ , we agreed to start the negotiations aiming at removal of unlawful & inhumane sanctions on 29 November in Vienna," Bagheri Kani wrote in a tweet.

United States Secretary of State John Kerry walks to lunch with members his negotiating team, including Robert Malley (L) from the US National Security Council, following a meeting with Iran's Foreign Minister Javad Zarif over Iran's nuclear program in Lausanne March 20, 2015. (credit: REUTERS/BRIAN SNYDER)
United States Secretary of State John Kerry walks to lunch with members his negotiating team, including Robert Malley (L) from the US National Security Council, following a meeting with Iran's Foreign Minister Javad Zarif over Iran's nuclear program in Lausanne March 20, 2015. (credit: REUTERS/BRIAN SNYDER)
In April, Tehran and six powers started to discuss ways to salvage the nuclear pact, which has eroded since 2018 when then-President Donald Trump withdrew the United States from it and reimposed sanctions on Iran, prompting Tehran to breach various limits on uranium enrichment set by the pact.

But the talks have been on hold since the election of Iran's hardline President Ebrahim Raisi in June, who is expected to take a tough approach when the talks resume in Vienna.