Iran

UN nuclear watchdog chief says Iran could again begin enriching uranium in ‘matter of months’

Author: Laura Sharman and Sophie Tanno, CNN Source: CNN:::
June 29, 2025 at 22:50
IAEA chief Rafael Grossi's comments appear to support an early assessment from the Pentagon’s Defense Intelligence Agency. Elisabeth Mandl/Reuters/File
IAEA chief Rafael Grossi's comments appear to support an early assessment from the Pentagon’s Defense Intelligence Agency. Elisabeth Mandl/Reuters/File

CNN — The head of the UN’s nuclear watchdog says US strikes on Iran fell short of causing total damage to its nuclear program and that Tehran could restart enriching uranium “in a matter of months,” contradicting President Donald Trump’s claims the US set Tehran’s ambitions back by decades.

Rafael Grossi’s comments appear to support an early assessment from the Pentagon’s Defense Intelligence Agency, first reported on by CNN, which suggests the United States’ strikes on key Iranian nuclear sites last week did not destroy the core components of its nuclear program, and likely only set it back by months.

While the final military and intelligence assessment has yet to come, Trump has repeatedly claimed to have “completely and totally obliterated” Tehran’s nuclear program.

 

The 12-day conflict between Israel and Iran began earlier this month when Israel launched an unprecedented attack it said aimed at preventing Tehran developing a nuclear bomb. Iran has insisted its nuclear program is for peaceful purposes.

The US then struck three key Iranian nuclear sites before a ceasefire began. The extent of the damage to Tehran’s nuclear program has been hotly debated ever since.

US military officials have in recent days provided some new information about the planning of the strikes, but offered no new evidence of their effectiveness against Iran’s nuclear program.

Following classified briefings this week, Republican lawmakers acknowledged the US strikes may not have eliminated all of Iran’s nuclear materials – but argued that this was never part of the military’s mission.

Meanwhile, The Washington Post reported on Sunday the US had obtained intercepted messages in which senior Iranian officials discussing the attacks said they were not as destructive as they anticipated.

Severe but not ‘total’ damage

Asked about the different assessments, Grossi, director general of the International Atomic Energy Agency (IAEA), told CBS’s “Face the Nation with Margaret Brennan”: “This hourglass approach in weapons of mass destruction is not a good idea.”

“The capacities they have are there. They can have, you know, in a matter of months, I would say, a few cascades of centrifuges spinning and producing enriched uranium, or less than that. But as I said, frankly speaking, one cannot claim that everything has disappeared and there is nothing there,” he told Brennan, according to a transcript released ahead of the broadcast.

“It is clear that there has been severe damage, but it’s not total damage,” Grossi went on to say. “Iran has the capacities there; industrial and technological capacities. So if they so wish, they will be able to start doing this again.”

Grossi also told CBS News that the IAEA has resisted pressure to say whether Iran has nuclear weapons or was close to having weapons before the strikes.

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