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.”



The Election of a Trump Ally in Poland Could Alter EU and Ukraine Policies 

Karol Nawrocki, candidate for the 2025 Polish presidential election supported by Poland's right-wing Law and Justice (PiS) party, flashes the victory sign in front of supporters as exit polls were announced on tv during their election night event at the Mala Warszawa Theater in Warsaw, Poland, during the second round of the presidential elections on June 1, 2025. (AFP)
Karol Nawrocki, candidate for the 2025 Polish presidential election supported by Poland's right-wing Law and Justice (PiS) party, flashes the victory sign in front of supporters as exit polls were announced on tv during their election night event at the Mala Warszawa Theater in Warsaw, Poland, during the second round of the presidential elections on June 1, 2025. (AFP)
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The Election of a Trump Ally in Poland Could Alter EU and Ukraine Policies 

Karol Nawrocki, candidate for the 2025 Polish presidential election supported by Poland's right-wing Law and Justice (PiS) party, flashes the victory sign in front of supporters as exit polls were announced on tv during their election night event at the Mala Warszawa Theater in Warsaw, Poland, during the second round of the presidential elections on June 1, 2025. (AFP)
Karol Nawrocki, candidate for the 2025 Polish presidential election supported by Poland's right-wing Law and Justice (PiS) party, flashes the victory sign in front of supporters as exit polls were announced on tv during their election night event at the Mala Warszawa Theater in Warsaw, Poland, during the second round of the presidential elections on June 1, 2025. (AFP)

Poland has elected Karol Nawrocki, a conservative historian and staunch nationalist, as its next president in a closely watched vote that signals a resurgence of right-wing populism in the heart of Europe.

Nawrocki, who is set to take office on Aug. 6, is expected to shape the country’s domestic and foreign policy in ways that could strain ties with Brussels while aligning the Central European nation of nearly 38 million people more closely with the administration of President Donald Trump in the United States.

Here are some key takeaways:

Conservative populism on the rise Nawrocki’s victory underscores the enduring appeal of nationalist rhetoric among about half of the country along the eastern flank of NATO and the European Union, and its deep social divisions.

The 42-year-old historian, who had no previous political experience, built his campaign on patriotic themes, traditional Catholic values, and a vow to defend Poland's sovereignty against the EU and larger European nations like Germany.

His win also reflects the appeal of right-wing nationalism across Europe, where concerns about migration, national sovereignty, and cultural identity have led to surging support for parties on the right — even the far right in recent times.

Far-right candidates did very well in Poland's first round of voting two weeks earlier, underlining the appeal of the nationalist and conservative views. Nawrocki picked up many of those votes.

As his supporters celebrate his win, those who voted for the defeated liberal candidate, Warsaw Mayor Rafał Trzaskowski, worry that it will hasten the erosion of liberal democratic norms.

Prime Minister Donald Tusk's troubles Nawrocki’s presidency presents a direct challenge to Prime Minister Donald Tusk, who returned to power in late 2023 pledging to mend relations with the EU and restore judicial independence which Brussels said was eroded by Law and Justice, the party that backed Nawrocki.

But Tusk's coalition, a fragile alliance of centrists, leftists, and agrarian conservatives, has struggled to push through key promises.

Nawrocki will have the power to veto legislation, complicating Tusk’s agenda and potentially triggering political gridlock.

Ties with the Trump administration Nawrocki's election could signal a stronger relationship between Poland and the Trump administration.

Poland and the US are close allies, and there are 10,000 US troops stationed in Poland, but Tusk and his partners in the past have been critical of Trump. Nawrocki, however, has a worldview closely aligned with Trump and his Make America Great Again ethos.

Trump welcomed Nawrocki to the White House a month ago and his administration made clear in other ways that he was its preferred candidate.

A shifting focus on Ukraine While Nawrocki has voiced support for Ukraine’s defense against Russian aggression, he does not back Ukrainian membership in NATO and has questioned the long-term costs of aid, particularly support for refugees.

His rhetoric has at times echoed that of Trump, for instance by accusing Ukrainian President Volodymyr Zelenskyy of what he said was insufficient gratitude for Poland’s assistance. With growing public fatigue over helping Ukrainian refugees, Nawrocki’s approach could shift Poland’s posture from strong ally to conditional partner if the war drags on much longer.

Ties with the EU The election result is a setback for the EU, which had welcomed Tusk’s return in 2023 as a signal of renewed pro-European engagement.

Nawrocki and the Law and Justice party have criticized what nationalists view as EU overreach into Poland's national affairs, especially regarding judicial reforms and migration policy.

While the president does not control day-to-day diplomacy, Nawrocki’s symbolic and veto powers could frustrate Brussels’ efforts to bring Poland back into alignment with bloc standards, particularly on rule-of-law issues.

Market jitters Though an EU member, Poland has its own currency, the zloty, which weakened slightly on Monday morning, reflecting investor concerns over potential policy instability and renewed tensions with EU institutions.

Billions of euros in EU funding has been linked to judicial reforms which Tusk's government will now be unlikely to enact without presidential cooperation.