He explained that all data indicate that Iran's stockpile of enriched uranium by is up to 60 percent, which it maintains in the form of uranium hexafluoride, the gas enriched in centrifuges, has grown by 12.5 kilograms to 55.6 kilograms since the last quarterly report issued on May 30.

In addition, the quarterly report confirmed what the United Nations agency has repeatedly stated in the past, that Tehran has not yet provided clear and honest answers to the origin of uranium particles found in three old nuclear sites that were not previously known.

The Director-General of the Agency, Rafael Grossi, also expressed his growing concern about Iran's handling of the requests of international inspectors on this file, explaining that no progress was made in this context, according to Reuters.

This report comes at a sensitive time, amid pessimism surrounding the talks to revive the nuclear agreement signed in 2015, after long rounds of consultations between Tehran and Western countries.

Iran's stipulation that the agency's investigations should be closed to return to the agreement ended the hopes that had surfaced weeks ago.

It prompted the European Coordinator, Joseph Borrell, to express his disappointment two days ago, noting that the Iranian response to the European text he presented to the negotiators was not constructive or encouraging and set things back.

It is noteworthy that the European Union submitted on August 8, after long and complex rounds and negotiations that started last April (2021) in Vienna, and lasted 16 months, a final text to overcome the impasse to revive this agreement.

Borrell received the first Iranian response in mid-August 2022, followed by the American reaction to Iranian observations and demands. Finally, Tehran's response came and dashed the hopes of reviving the nuclear agreement.