Iran’s Centrifuges: The Long Road Towards a Nuclear Bomb

This photo released on Nov. 5, 2019, by the Atomic Energy Organization of Iran shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. (Atomic Energy Organization of Iran via AP, File)
This photo released on Nov. 5, 2019, by the Atomic Energy Organization of Iran shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. (Atomic Energy Organization of Iran via AP, File)
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Iran’s Centrifuges: The Long Road Towards a Nuclear Bomb

This photo released on Nov. 5, 2019, by the Atomic Energy Organization of Iran shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. (Atomic Energy Organization of Iran via AP, File)
This photo released on Nov. 5, 2019, by the Atomic Energy Organization of Iran shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. (Atomic Energy Organization of Iran via AP, File)

The UN nuclear agency has confirmed that Iran plans to install around 6,000 new centrifuges to enrich uranium, according to a report seen by AFP on Friday.

“Iran informed the Agency that it intended to feed” around 6,000 centrifuges at its sites in Fordo and Natanz to enrich uranium to up to five percent, higher than the 3.67 percent limit Tehran had agreed to in 2015.

The Iranian decision came in response to a resolution adopted on November 21 by the UN nuclear watchdog that censures Tehran for what the agency called lack of cooperation.

On Thursday, Iran had threatened to end its ban on acquiring nuclear weapons if Western sanctions are reimposed.

The country’s foreign minister, Abbas Araghchi, said in an interview that the nuclear debate inside Iran is likely to shift towards the possession of its own weapons if the west goes ahead with a threat to reimpose all UN sanctions,

What are centrifuges?

They are precise devices with cylinders that rotate much faster than the speed of sound, to collect enriched uranium atoms.

To explain how centrifugation works, rotating cylinders are much like medical laboratory equipment used to test blood.

The high rotation speeds exert a rotational force that separates the various components of blood as a function of their density and quantity in the sample.

In the case of uranium, the centrifuge operates using the familiar principle of centrifugal force. This force separates two gases of unequal masses in a spinning cylinder or tube. The heavier uranium-238 isotope collects at the outer edges of the cylinder while the lighter uranium-235 collects near the axis of rotation at the center.

Around 20 kg of uranium enriched to a 90% purity level would be needed for a single nuclear weapon. It would take about 1,500 SWU to produce a weapon-equivalent of 90 percent-enriched uranium from this enriched uranium.

At Fordo, Iran is currently using the two only operating cascades of IR-6 centrifuges there to enrich to 60% from 20%.

There are 1,044 centrifuges active at the Fordo uranium enrichment plant, Iran's President Masoud Pezeshkian said.

He had earlier asked the Iran Atomic Energy Agency to begin inserting uranium gas into newly activated advanced centrifuges.

Early this month, a spokesperson for the US State Department said Iran's expansion of uranium enrichment activities in defiance of key nuclear commitments is "a big step in the wrong direction”.

His statement came after Tehran announced it would start injecting uranium gas into centrifuges at Fordo.

Dispute

The Nuclear Non-Proliferation Treaty, signed in 2015 between Tehran and Western countries, says advanced centrifuges for uranium enrichment could operate until January 2027.

The difference between the first generation of centrifuges (IR-1) and the other generations is speed. The latest generation, IR-6, could enrich uranium up to 10 times faster than the first-generation IR-1, according to Iranian officials.

During the heyday of its nuclear program, Iran operated a total of 10,204 first-generation IR-1 centrifuges at the Natanz and Fordo facilities. But under the deal, Iran's commitments included operating no more than 5,060 IR-1 centrifuges for a period of 10 years.

Although the centrifuges that Iran installed before the 2015 nuclear deal were of the first generation, Tehran’s recent uranium enrichment activity at nuclear sites has reached disturbingly advanced levels, potentially increasing the nuclear proliferation risk.

Major centrifuge activities in Iran

May 2008: Iran installed several centrifuges including more modern models.

March 2012: Iranian media announced 3,000 centrifuges at Natanz.

August 2012: The International Atomic Energy Agency announced that Iran had installed large parts of the centrifuges at Fordo.

November 2012: An IAEA report confirmed that all advanced centrifuges had been installed at Fordo, although there were only four working centrifuges, and another four fully equipped, vacuum tested, and ready to go.

February 2013: IAEA says Iran has operated 12,699 IR-1 centrifuges at the Natanz site.

June 2018: Iran’s supreme leader revealed Tuesday that it ultimately wants 190,000 nuclear centrifuges — a figure 30 times higher than world powers allowed under the 2015 deal.

September 2019: Iran mounted 22 IR-4, one IR-5, 30 IR-6, and three IR-6 for testing, outside the treaty boundaries.

September 2019: Iran announced it started operating advanced and fast centrifuges to enrich uranium.

November 2024: Iranian Foreign Minister Abbas Araghchi announces that his country will operate several thousand advanced centrifuges.

November 2024: Iranian state television broadcasts AEOI Chief Mohammad Eslami announcing that “gasification of a few thousands of new generation centrifuges has been started.”



Israeli Raids Displaced Tens of Thousands in the West Bank. Now Few Places to Shelter Remain 

Boys sit by during the funeral of 18-year-old Palestinian Malik Hattab who was killed the previous day after succumbing to injuries sustained during an Israeli raid on the Jalazun camp for Palestinian refugees north of Ramallah in the occupied West Bank, at the camp on April 15, 2025. (AFP) 
Boys sit by during the funeral of 18-year-old Palestinian Malik Hattab who was killed the previous day after succumbing to injuries sustained during an Israeli raid on the Jalazun camp for Palestinian refugees north of Ramallah in the occupied West Bank, at the camp on April 15, 2025. (AFP) 
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Israeli Raids Displaced Tens of Thousands in the West Bank. Now Few Places to Shelter Remain 

Boys sit by during the funeral of 18-year-old Palestinian Malik Hattab who was killed the previous day after succumbing to injuries sustained during an Israeli raid on the Jalazun camp for Palestinian refugees north of Ramallah in the occupied West Bank, at the camp on April 15, 2025. (AFP) 
Boys sit by during the funeral of 18-year-old Palestinian Malik Hattab who was killed the previous day after succumbing to injuries sustained during an Israeli raid on the Jalazun camp for Palestinian refugees north of Ramallah in the occupied West Bank, at the camp on April 15, 2025. (AFP) 

For weeks, the family had been on the move. Israeli troops had forced them from home during a military operation that has displaced tens of thousands of Palestinians across the occupied West Bank. After finding shelter in a wedding hall, they were told to leave again.

"We don’t know where we’ll go," said the family's 52-year-old matriarch, who did not want to be identified for fear of reprisal. She buried her face in her hands.

The grandmother is one of more than 1,500 displaced people in and around the northern city of Tulkarem who are being pushed from schools, youth centers and other venues because the people who run them need them back. It was not clear how many displaced in other areas like Jenin face the same pressure.

Many say they have nowhere else to go. Israeli forces destroyed some homes.

The cash-strapped Palestinian Authority, which administers parts of the West Bank, has little to offer. The UN agency for Palestinian refugees, the largest aid provider in the occupied territories, struggles to meet greater needs in the Gaza Strip while facing Israeli restrictions on its operations.

Approximately 40,000 Palestinians were driven from their homes in January and February in the largest displacement in the West Bank since Israel captured the territory in the 1967 Mideast war.

Israel says the operations are needed to stamp out militancy as violence by all sides has surged since Hamas' Oct. 7, 2023, attack ignited the war in Gaza.

Fears of long-term displacement Israel's raids have emptied out and largely destroyed several urban refugee camps in the northern West Bank, like Tulkarem and nearby Nur Shams, that housed the descendants of Palestinians who fled or were driven from their homes in previous wars.

Israel says troops will stay in some camps for a year.

People with means are living with relatives or renting apartments, while the impoverished have sought refuge in public buildings. Now that the Muslim holy month of Ramadan has ended, many are being told to leave.

"This is a big problem for us, as the schools cannot be used for the displaced because there are students in them, and at the same time, we have a shortage of financial resources," said Abdallah Kmeil, the governor of Tulkarem.

He said the Palestinian Authority is looking for empty homes to rent to families and plans to bring prefabricated containers for some 20,000 displaced. But it’s unclear when they will arrive.

Seven minutes to pack

The matriarch said Israeli troops gave the family seven minutes to pack when they evicted them from the Nur Shams camp in early February. They left with backpacks and a white flag to signal they weren't a threat.

Shelters were overcrowded. People slept on floor mats with little privacy, and dozens at times shared a few toilets and a shower.

The family tried to return home when soldiers allowed people to go back and get their belongings. Days later, they were forced to leave again, and soldiers warned that their house would be burned if they didn’t, the woman said.

The family found a charity center that doubles as a wedding hall in a nearby town. Now, with the onset of wedding season, they have had to leave.

When the family feels homesick, they walk to a hilltop overlooking Nur Shams.

Palestinians sheltering in and around Tulkarem say they feel abandoned. Much of the aid they were receiving, such as food and clothes, came from the community during Ramadan, a time of increased charity. Now that has dried up.

Israel's crackdown in the West Bank has also left tens of thousands unemployed. They can no longer work the mostly menial jobs in Israel that paid higher wages, making it harder to rent scarce places to stay.

Iman Basher used to work on a Palestinian farm near her house in Nur Shams. Since fleeing, the day's walk there is too far to travel, she said. The 64-year-old was among dozens of people recently forced from another wedding hall. She now sleeps on a mat in another packed building.

Basher said soldiers raiding her house stole about $2,000, money she had been saving for more than a decade for her children’s education.

An Israeli military spokesperson said the army prohibits the theft or wanton destruction of civilian property and holds soldiers accountable for what it called "exceptional" violations. The army said gunmen fight and plant explosives in residential areas, and soldiers sometimes occupy homes to combat them.

‘The scale of the displacement is beyond us’

Aid groups said some displaced people are living in unfinished buildings, without proper clothes, hygiene, bedding or access to healthcare.

"It’s hard to find where the need is ... The scale of the displacement is beyond us," said Nicholas Papachrysostomou, emergency coordinator in the northern West Bank for Doctors Without Borders.

The charity's mobile clinics provide primary healthcare, but there’s a shortage of medicine and it’s hard to get supplies because of Israeli restrictions and financial constraints by the West Bank's health ministry, he said.

The UN agency for Palestinian refugees, known as UNRWA, plans to disburse $265 a month to about 30,000 of the most vulnerable displaced people, but there is enough money for only three months, said Hanadi Jaber Abu Taqa, head of UNRWA in the northern West Bank.

The agency's money mostly goes to Gaza. Just over 12% of the funds it seeks from donors for this year will be allocated to the West Bank.

Portable housing for the many displaced would only be a temporary fix. Some Palestinians said they wouldn't accept it, worrying it would feel like giving up their right to return home.

Isam Sadooq had been helping 60 displaced people staying at a youth center in Tulkarem. Last month, he was told, by the people who run the center, that they should consider evacuating so children can resume sports.

"If we cannot find them another place to live, what will be their fate?" he said. "They will find themselves in the street, and this is something we do not accept."