Iran's top nuclear negotiator Ali Bagheri Kani said in a tweet on Wednesday he had agreed with European Union envoy Enrique Mora to start negotiations on November 29 in Vienna.
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"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, Iran's deputy Foreign Minister, wrote in a tweet.
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.
In April, Iran and six powers started talks in Vienna to reinstate the deal, which then-U.S. President Donald Trump ditched three years ago before reimposing sanctions that have crippled Iran's economy.
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However, the talks were put on hold after Iran's presidential election in June that brought anti-Western hardliner Ebrahim Raisi to power.
A main disagreement in Vienna has been over Iran's requirement for the United States to give guarantees that it would not renege on the nuclear agreement in the future.
In reaction to Trump's reimposition of sanctions, Tehran breached the deal by rebuilding stockpiles of enriched uranium, refining it to higher fissile purity and installing advanced centrifuges to speed up output.