WASHINGTON, July 13 — The Joint Comprehensive Plan of Action, the 2015 nuclear deal between Iran and world powers, has effectively collapsed. A decade of violations, withdrawals, and escalating enrichment has left the agreement in tatters, with Iran now holding a stockpile of enriched uranium that the International Atomic Energy Agency has confirmed at over 5,000 kilograms. The record shows the JCPOA was signed on July 14, 2015, between Iran and the P5+1 — the United States, Britain, France, Russia, China, and Germany.
The deal limited Iran’s uranium enrichment in exchange for sanctions relief. It held for nearly three years.
The 2018 Withdrawal and the Dominoes That Fell
On May 8, 2018, President Trump withdrew the United States from the agreement. The administration cited Iran’s ballistic missile program and its regional activities as reasons for leaving the deal. Iran remained in compliance for roughly another year.
By July 2019, Iran had begun violating the deal’s core enrichment limit of 3.67 percent. The IAEA confirmed that month that Iran had reached 4.5 percent purity.
That was the first step in a steady climb. By January 2024, the IAEA reported that Iran had enriched uranium to 60 percent purity. That level is a short technical step from weapons-grade material, which is defined as 90 percent enrichment.
In November 2024, IAEA inspectors confirmed Iran had stockpiled over 5,000 kilograms of enriched uranium, including 200 kilograms at the 60 percent level.
Cyber Operations and the Toll
The United States and Israel have conducted cyberattacks on Iran’s nuclear infrastructure. The most notable was the Stuxnet worm in 2010, which damaged centrifuges at Iran’s Natanz enrichment facility. That operation predates the JCPOA but remains part of the broader timeline of confrontation over Iran’s nuclear program.
In March 2025, President Trump imposed a blockade and a toll aimed at forcing Iran back to negotiations. The administration’s strategy is to apply economic pressure to compel a new agreement.
Iran’s Response: A Threat of Weapons-Grade Enrichment
Iran’s Foreign Minister, Abbas Araghchi, stated on March 21, 2025, that Iran would resume enrichment to 90 percent — weapons-grade — if the blockade continues. That statement represents the most direct threat yet from Tehran to cross the nuclear threshold. The timeline shows a clear progression.
From 3.67 percent in 2015, to 4.5 percent in 2019, to 60 percent by January 2024, to a stockpile of over 5,000 kilograms by November 2024, and now the explicit threat of 90 percent enrichment. Each step has been verified by the IAEA.
What Comes Next
The blockade remains in place as of July 2026. Iran has not yet enriched to 90 percent, according to public IAEA reports. But the stockpile and the stated intention are on the record.
The question now is whether the pressure campaign will force a new negotiation or whether Iran will follow through on its threat. The IAEA continues to monitor Iran’s facilities, but its access has been a recurring point of contention.
The United States and Israel have demonstrated both the willingness and the capability to strike Iran’s nuclear infrastructure through cyber means. The JCPOA, as originally signed, no longer exists in any meaningful form. What replaces it — a new deal, a nuclear-armed Iran, or further military action — remains the open question on the timeline.
