What Do You Really Know About The Iranian Nuclear Program

“When we raided the nuclear archive in Tehran, what we found there was not history. We found an operational work plan. Iran lied to the world with a straight face when it claimed it had no military ambitions, and the nuclear deal was built entirely on top of that lie.” Yossi Cohen, former Head of the Mossad

In 2007, the U.S. Intelligence Community released a National Intelligence Estimate (NIE) that sent shockwaves through the global intelligence apparatus. The report concluded with “high confidence” that Iran had halted its nuclear weapons program—known as the “Amad Plan”—in the fall of 2003.

Amad was the codename for Iran’s covert, highly centralized military program aimed at developing a deliverable nuclear weapon. Orchestrated from the late 1990s until autumn 2003 under the auspices of the Iranian Ministry of Defense, the program was spearheaded by senior nuclear scientist Mohsen Fakhrizadeh, who was assassinated in 2020.

The objective of the Amad Plan was explicit and laser-focused: produce an initial arsenal of five nuclear warheads, each with a 10-kiloton yield, and conduct a subterranean nuclear test.

 

Running the Ridge: The 60% Leap

During the first half of 2025, Iran shifted the bulk of its uranium stockpile from 20% enrichment up to 60%. To understand why this matters, think of the nuclear sprint as climbing a massive mountain where the peak is 90% enrichment—weapons-grade material.

Uranium extracted from the ground is incredibly weak, containing less than 1% of the fissile isotope. Turning it into bomb material requires a grueling process of refining and enrichment via specialized machines called centrifuges.

• The Ascent: Scientifically speaking, bringing uranium from its natural state up to 20% requires roughly 90% of the entire project’s total effort, time, and energy. It is a steep, exhausting climb. Iran spent years conquering this phase, accumulating a massive stockpile at the 20% plateau.

• The Ridge Run: In the first half of 2025, Tehran decided to sprint. They took that 20% stockpile and pushed it to 60%. Because the heavy lifting had already been done, jumping from 20% to 60% is vastly faster and easier. It is the equivalent of running along the high ridge toward the summit.

• The Breakout Window: A 60% enrichment level is practically a stone’s throw from a bomb. The distance between 60% and the 90% military peak is minuscule. While it previously took months or years to build a weapon, bridging the gap from 60% to 90% can now be done in a matter of weeks.

Furthermore, with a massive cache of 60% enriched uranium, Iran didn’t even need to reach 90% to project a strategic threat. They could have weaponized the material as-is to create an unprecedented radiological threat—a massive dirty bomb.

The documents seized by the Mossad during the 2018 raid on Tehran’s secret nuclear archive exposed how the Amad Plan was structured into distinct, compartmentalized sub-projects:

• Project 110: The core initiative tasked with the design, planning, and manufacturing of the nuclear warhead itself, including the detonation mechanism and the core.

• Project 111: The integration of the nuclear warhead into the reentry vehicle of Iran’s “Shahab-3” ballistic missile.

• Project 3: The development and production of specialized high explosives and detonators required to trigger a perfectly symmetrical implosion of the uranium core.

• Project 4: Handling uranium enrichment and the construction of covert facilities, including the deep underground Fordow site, which began construction secretly during this period.

• Project Midan: The identification and geological assessment of five potential sites across Iran for conducting an underground nuclear test.

The JCPOA: Diplomatic Solution or Willful Blindness?

Following years of international pressure—driven heavily by Israel—the U.S. led the global community to sign the JCPOA (Joint Comprehensive Plan of Action) in 2015. The deal temporarily paused certain elements of Iran’s program but left its foundational infrastructure intact.

Iran was forced to slash its enriched uranium stockpile by 98%, maintaining only a nominal amount capped at a low 3.67% enrichment level. It deactivated two-thirds of its centrifuges and poured concrete into the core of the Arak heavy water reactor. The International Atomic Energy Agency (IAEA) received unprecedented access to Iran’s declared facilities.

However, critics were fiercely skeptical. Foremost among them was David Albright, a physicist and head of the Institute for Science and International Security (ISIS). Albright emerged as one of the most influential critics of the JCPOA, arguing that the Obama administration suffered from willful blindness to secure a diplomatic trophy.

Because the U.S. allowed Iran to sign the deal without confessing to the existence of the Amad Plan, the IAEA lacked a proper baseline to know which scientists, documents, and technologies Tehran was actively hiding.

When Israel captured the Tehran archive, Albright was one of the few global experts granted direct access to the files. In his 2021 book, Iran’s Perilous Pursuit of Nuclear Weapons (co-authored with analyst Sarah Burkhard), he provided a meticulous physical and intelligence analysis of the thousands of blueprints and photos seized in the 2018 raid. The book became the ultimate scientific indictment of the 2015 nuclear deal.

 

Albright demonstrated that when the centralized Amad program officially closed in 2003, the Iranian leadership never intended to halt weaponization. Instead, they issued a strict directive to preserve and decentralize their scientific know-how. The archive itself, hidden in secret safes in Tehran’s Shurabad district, was no dusty historical collection—it was a live, step-by-step instruction manual.

While Iranian diplomats smiled for cameras in Lausanne and Vienna, the exact same scientific apparatus, operating under the Ministry of Defense’s SPND umbrella organization, was busy cataloging, protecting, and concealing this hidden brain trust. Iran enjoyed sanctions relief under the JCPOA while keeping the intellectual core of its weapons program completely intact.

Albright coined a vital concept within the intelligence community: “Nuclear capability on the shelf.” While the Obama-era agreement strictly monitored centrifuges and visible uranium, it only addressed the industrial phase. The truly difficult part of a nuclear program is engineering a deliverable warhead—a problem Iran had already solved during the Amad era. This knowledge was kept warm, distributed, and ready for deployment whenever a political window or the expiration of sunset clauses allowed.

Consequently, Iran’s subsequent surge to 60% enrichment was not an improvisation; it was the systematic execution of a pre-planned strategy.

The Max Pressure Paradox

Following the Obama era, President Donald Trump took office. His May 2018 decision to withdraw from the nuclear deal—actively encouraged and pushed by Israeli Prime Minister Benjamin Netanyahu—yielded results diametrically opposed to what was intended, leaving the West without effective diplomatic leverage.

Free from the agreement’s constraints, Tehran systematically shed its commitments. It began enriching to 20%, then accelerated to 60%, culminating in the dramatic 2025 escalation that shrank its breakout window to a matter of weeks. Critics quickly questioned the strategy: Is it better to have Iran a year away from a bomb under strict supervision, or days away from breakout with no eyes on the inside?

The Trump-Netanyahu strategy assumed that crippling economic sanctions via a “Maximum Pressure” campaign would force the regime into internal collapse or bring them crawling back to negotiate a comprehensive deal covering ballistic missiles and regional proxies.

Instead, the regime in Tehran dug in. It cultivated economic resilience through massive illicit oil smuggling to China and chose a strategy of aggressive counter-escalation—spinning up centrifuges and ramping up regional proxy warfare.

The U.S. found itself isolated. Fellow signatories—the UK, France, Germany, Russia, and China—refused to abandon the deal, shattering the international united front against Iran. Albright, despite his background in arms control, repeatedly stressed that sanctions alone would never deter Iran if it sensed Western weakness. A credible, highly visible military option was paramount.

The New Intelligence Reality

By early 2025, the accumulation of 60% enriched uranium created a nightmare scenario. Iran no longer needed a sophisticated ballistic missile warhead to achieve strategic deterrence. Its ability to leverage its existing stockpile for dirty bombs threatened to instantly freeze the IDF’s regional operational freedom.

By June 2025, IAEA monitoring had become entirely obsolete. Iran restricted inspector access, deactivated surveillance cameras, and accelerated construction on deeply fortified underground facilities beneath the Fordow mountains and a new site near Natanz, exploiting regional tensions to finalize the weaponization puzzle under the cover of darkness.

The outbreak of open warfare in June 2025 radically altered the playing field. For over two decades, Western and Israeli intelligence had been obsessed with the “breakout clock.” Following the kinetic strikes on Iranian facilities in June 2025, that metric temporarily lost its relevance. The centrifuges and physical uranium stockpiles were decimated or dispersed.

The strategy has now pivoted entirely from breakout prevention to reconstruction denial.

Albright warns that the intellectual core of the program—the scientists, the engineering blueprints from the Amad Plan, and the data stored in the archives—cannot be erased by precision-guided munitions. The conflict has evolved into a grinding intelligence war of attrition aimed at preventing Iran from building even smaller, deeper, and more covert facilities.

 

The war effectively buried the European and American illusion that the clock could be turned back to the 2015 model. The equation is now purely kinetic. Regional dynamics are no longer dictated by tables in Vienna, but by raw, physical deterrence.

Writing on X, Albright summarized the current state of play following the military campaigns of June 2025 and the subsequent Phase 2 operations in February–April 2026:

“The military campaigns changed the game. After two major strike waves targeting both enrichment infrastructure and weaponization projects, the program is largely gutted. Breakout time has temporarily lost relevance; the dynamic has shifted to an intel-military war of attrition to deny reconstruction. Today, Iran is nowhere near building a weapon. The regime is fundamentally deterred because they have seen what precision munitions do up close, and the vulnerability window between a decision and a completed weapon is now drastically wider.”

This assessment drew pushback from some corners. Danny Citrinowicz, a senior fellow focusing on Iran and the Shiite Axis, argued: “I strongly suggest looking back at actual U.S. intelligence estimates, which repeatedly affirmed Iran was not on the brink of weaponization. More importantly, even Israel never publicly claimed Khamenei made the political decision to build a bomb. That’s not my take—that was the consensus of the American intelligence community.”

Albright’s counter was characteristically sharp:

“Your snarky comment is foolish regarding the sites we monitor being tied to a future effort, rather than what they actually are—part of the damage assessment of an existing nuclear weapons program. You should try it sometime instead of spinning a false narrative on the pre-war status of Iran’s nuclear weapons program... By the way, since you quote U.S. NIEs so freely, you must know German, British, and I believe French intelligence fundamentally disagreed with the U.S. 2007 NIE conclusion that Iran’s weapons program ended in 2003.”

The recent military campaigns have proven that the U.S. intelligence community’s “light switch” conceptual model—the idea that Iran would make a formal, binary decision to build a bomb—completely collapsed when exposed to reality. Iran never needed an official decree to build a weapon; it simply built the shelf and placed all the components on it.

With Fordow and Natanz heavily compromised and the breakout timeline significantly extended, the old diplomacy is dead. The current equation is brutal, sharp, and simple: constant physical deterrence.

The military actions of 2025 and 2026 rewrote the rules, obliterated the 60% stockpile, and backed Tehran into a corner. Iran may be further from a functional bomb today than it has been in decades, but the shadow war in the trenches of intelligence is far from over.