POLITICAL TIMELINE

NUCLEAR TIMELINE

TRUMP ADMINISTRATION
MAY 2018
U.S. leaves JCPOA
MAY 2019
Iran announces plan to incrementally breach JCPOA
MAY  2019
Iran installs a greater number of IR-6 centrifuges than JCPOA permits. IR-6 is one of Iran’s fastest machines
JULY 2019
Iran breaches JCPOA caps on uranium enrichment level & size of enriched uranium stockpile
SEPT 2019
Iran begins enriching uranium using an array of advanced centrifuges at Natanz Pilot Fuel Enrichment Plant (PFEP)
NOV 2019
Iran breaches JCPOA heavy-water cap, restarts enrichment at underground Fordow plant. International Atomic Energy Agency (IAEA) reports discovery of undeclared uranium at warehouse in Tehran, which Iran apparently sanitized. Total enriched uranium stockpile is >370 kilograms
JAN 2020
Commander of the Islamic Revolutionary Guard Corps Quds Force Qassem Soleimani killed in U.S. drone strike
NOV 2019
IAEA reports Iran blocked access to two suspect sites and apparently sanitized them
NOV. 2020
Joe Biden elected president promising to return to JCPOA
NOV 2019
Iran's enriched uranium stockpile grows to >2,400 kilograms. Iran begins enriching uranium in advanced IR-2m centrifuges at Natanz Fuel Enrichment Plant (FEP)
DEC 2020
Iran's Guardian Council approves new law calling for major nuclear advances
NOV 2020
At Fordow, Iran starts enriching uranium to 20 percent purity, or 90 percent of the effort necessary to reach weapons-grade uranium (WGU)
MAY 2018
U.S. leaves JCPOA
MAY 2019
Iran announces plan to incrementally breach JCPOA
MAY  2019
Iran installs a greater number of IR-6 centrifuges than JCPOA permits. IR-6 is one of Iran’s fastest machines
JULY 2019
Iran breaches JCPOA caps on uranium enrichment level & size of enriched uranium stockpile
SEPT 2019
Iran begins enriching uranium using an array of advanced centrifuges at Natanz Pilot Fuel Enrichment Plant (PFEP)
NOV 2019
Iran breaches JCPOA heavy-water cap, restarts enrichment at underground Fordow plant. International Atomic Energy Agency (IAEA) reports discovery of undeclared uranium at warehouse in Tehran, which Iran apparently sanitized. Total enriched uranium stockpile is >370 kilograms
JAN 2020
Commander of the Islamic Revolutionary Guard Corps Quds Force Qassem Soleimani killed in U.S. drone strike
MAR 2020
IAEA reports Iran blocked access to two suspect sites and apparently sanitized them
NOV 2020
Iran's enriched uranium stockpile grows to >2,400 kilograms. Iran begins enriching uranium in advanced IR-2m centrifuges at Natanz Fuel Enrichment Plant (FEP)
JAN 2020
Iran's Guardian Council approves new law calling for major nuclear advances
JAN 2021
At Fordow, Iran starts enriching uranium to 20 percent purity, or 90 percent of the effort necessary to reach weapons-grade uranium (WGU)
BIDEN ADMINISTRATION
FEB 2021
Biden rescinds Trump's snapback of UN Iran sanctions under JCPOA implementing resolution 2231
FEB.  2021
Iran stops implementing Additional Protocol & JCPOA monitoring measures, which give the lAEA greater insight into Tehran's nuclear activities. Absent these, IAEA access & monitoring at nuclear sites are restricted. Tehran threatens to destroy IAEA data & makes 3.6 grams of uranium metal (used in nuclear weapon cores). IAEA detects undeclared uranium at two sites
APR. 2021
At Natanz PFEP, Iran begins using advanced centrifuges to enrich uranium to 60 percent purity, or 99 percent of the effort necessary to reach WGU. At Natanz FEP, Iran uses 1,044 IR-2m centrifuges and 348 IR-4s to enrich uranium up to 5 percent purity
APR - JUN 2021
P5+1 (US. France, Germany, UK, Russia & China) hold six rounds of indirect nuclear talks with Rouhani government
MAY  2021
Iran's enriched uranium stockpile grows to >3,200 kilograms. IAEA must estimate stockpile due to Tehran's reductions in agency monitoring
JUNE 2021
Ultra-hardiner Ebrahim Raisi selected to be president of Iran; nuclear talks stall
AUG 2021
Raisi inaugurated
AUG. 2021
Iran produces 200 grams of uranium metal enriched up to 20 percent
NOV - DEC 2021
P5+1 & Raisi government
restart nuclear talks
DEC.  2021
Iran starts enriching 20 percent uranium using a cascade of IR-6 centrifuges at Fordow plant, providing fast route to WGU production at a highly fortified facility
DEC 2021 - JAN 2022
Iran relocates advanced centrifuge manufacturing and assembly capabilities to underground sites at Natanz and Esfahan
MAR 2022
Nuclear talks stall, apparently due to Iran’s demand that the U.S. lift terrorism designation of Islamic Revolutionary Guards Corps
MAR. 2022
IAEA and Iran agree to a timetable for Iranian cooperation with IAEA investigation into undeclared nuclear material and activities
MAY 2022
Independent estimates find Iran has enough total enriched uranium to make WGU for five nuclear weapons within six months, and enough 60 percent enriched uranium to make one weapon without further enrichment to weapons-grade. Iran’s enriched uranium stockpile grows to >3,800 kilograms. IAEA finds Iranian answers not “technically credible” regarding investigation into undeclared nuclear material and activities
JUNE 2022
IAEA Board of Governors passes first censure resolution against Iran in
two years
JUNE 2022
Tehran reduces IAEA monitoring and announces plans to install hundreds more IR-6 centrifuges at Natanz FEP
FEB.  2021
Biden rescinds Trump's snapback of UN Iran sanctions under JCPOA implementing resolution 2231
FEB 2021
Iran stops implementing Additional Protocol & JCPOA monitoring measures, which give the lAEA greater insight into Tehran's nuclear activities. Absent these, IAEA access & monitoring at nuclear sites are restricted. Tehran threatens to destroy IAEA data & makes 3.6 grams of uranium metal (used in nuclear weapon cores). IAEA detects undeclared uranium at two sites
APR 2021
At Natanz PFEP, Iran begins using advanced centrifuges to enrich uranium to 60 percent purity, or 99 percent of the effort necessary to reach WGU. At Natanz FEP, Iran uses 1,044 IR-2m centrifuges and 348 IR-4s to enrich uranium up to 5 percent purity
APR - JUN. 2021
P5+1 (US. France, Germany, UK, Russia & China) hold six rounds of indirect nuclear talks with Rouhani government
MAY  2021
Iran's enriched uranium stockpile grows to >3,200 kilograms. IAEA must estimate stockpile due to Tehran's reductions in agency monitoring
JUNE 2021
Ultra-hardiner Ebrahim Raisi selected to be president of Iran; nuclear talks stall
JUNE 2021
Raisi inaugurated
AUG 2021
Iran produces 200 grams of uranium metal enriched up to 20 percent
NOV - DEC. 2021
P5+1 & Raisi government
restart nuclear talks
DEC  2021
Iran starts enriching 20 percent uranium using a cascade of IR-6 centrifuges at Fordow plant, providing fast route to WGU production at a highly fortified facility
DEC 2021 - JAN 2022
Iran relocates advanced centrifuge manufacturing and assembly capabilities to underground sites at Natanz and Esfahan
MAR. 2022
Nuclear talks stall, apparently due to Iran’s demand that the U.S. lift terrorism designation of Islamic Revolutionary Guards Corps
MAR 2022
IAEA and Iran agree to a timetable for Iranian cooperation with IAEA investigation into undeclared nuclear material and activities
MAY 2022
Independent estimates find Iran has enough total enriched uranium to make WGU for five nuclear weapons within six months, and enough 60 percent enriched uranium to make one weapon without further enrichment to weapons-grade. Iran’s enriched uranium stockpile grows to >3,800 kilograms. IAEA finds Iranian answers not “technically credible” regarding investigation into undeclared nuclear material and activities
JUNE 2022
IAEA Board of Governors passes first censure resolution against Iran in
two years
JUNE 2022
Tehran reduces IAEA monitoring and announces plans to install hundreds more IR-6 centrifuges at Natanz FEP