1957 – The United States indicators a civil nuclear cooperation settlement with Iran.

1958 – Iran joins the IAEA.

1967 – The Tehran Nuclear Research Center, which features a small reactor provided by the United States, opens.

1968 – Iran indicators the Nuclear Non-Proliferation Treaty.

Mid-1970s – With US backing, Iran begins creating a nuclear energy program.

1979 – Iran’s Islamic revolution ends Western involvement within the nation’s nuclear program.

December 1984 – With assistance from China, Iran opens a nuclear analysis heart in Isfahan.

February 23, 1998 – The United States broadcasts considerations that Iran’s nuclear power program may result in the event of nuclear weapons.

March 14, 2000 – US President Bill Clinton indicators a legislation that permits sanctions in opposition to folks and organizations that present support to Iran’s nuclear program.
February 21, 2003 – IAEA Director General Mohamed ElBaradei visits Iran to survey its nuclear amenities and to encourage Iran to signal a protocol permitting IAEA inspectors larger and quicker entry to nuclear websites. Iran declines to signal the protocol. ElBaradei says he should settle for Iran’s assertion that its nuclear program is for producing energy and never weapons, regardless of claims of the United States on the contrary.

June 19, 2003 – The IAEA points a report saying that Iran seemed to be in compliance with the Non-Proliferation Treaty, however that it wanted to be extra open about its actions.

August 2003 – The IAEA broadcasts that its inspectors in Iran have discovered traces of extremely enriched uranium on the Natanz uranium enrichment plant. Iran claims the quantities are contamination from gear purchased from different nations. Iran agrees to signal a protocol of the Nuclear Non-Proliferation treaty that permits for unannounced visits to their nuclear amenities and indicators it on December 18, 2003.

October 2003 – The Foreign Ministers of Britain, France and Germany go to Tehran, and all events agree upon measures Iran will take to settle all excellent points with the IAEA. Under obligation to the IAEA, Iran releases a file on its nuclear actions. However, the report doesn’t include data on the place Iran acquired parts for centrifuges used to counterpoint uranium, a truth the IAEA considers essential in figuring out whether or not the uranium is to be enriched for weapons.

November 2003 – Iran agrees to halt uranium enrichment as a confidence constructing measure and accepts IAEA verification of suspension.
December 2003 – Iran signs the Additional Protocol to the nuclear Non-Proliferation Treaty with the IAEA voluntarily agreeing to broader inspections of its nuclear amenities.

February 2004 – A.Q. Khan, “father” of Pakistan’s nuclear weapons program, admits to having offered Iran and different nations with uranium-enrichment gear.

June 1, 2004 – The IAEA states they’ve discovered traces of uranium that exceed the quantity used for basic power manufacturing. Iran admits that it’s importing components for superior centrifuges that can be utilized to counterpoint uranium, however is utilizing the components to generate electrical energy.

July 31, 2004 – Iran states that it has resumed manufacturing on centrifuge components used for enriching uranium, however not enrichment actions.

August 8, 2005 – Iran restarts uranium conversion, a step on the best way to enrichment, at a nuclear facility, saying it’s for peaceable functions solely, and flatly rejects a European provide geared toward making certain the nation doesn’t search nuclear weapons.

August 9, 2005 – Iran removes the IAEA seals from its Isfahan nuclear processing facility, opening the uranium conversion plant for full operation. IAEA spokesman Mark Gwozdecky states that the plant “is fully monitored by the IAEA” and “is not a uranium enrichment plant.”

September 11, 2005 – Iran’s new overseas minister, Manouchehr Mottaki, says the nation will not droop actions at its Isfahan uranium conversion facility and it plans to hunt bids for the development of two extra nuclear vegetation.

January 10, 2006 – Iran resumes analysis at its Natanz uranium enrichment plant, arguing that doing so is inside the phrases of an settlement with the IAEA.

January 12, 2006 – Foreign ministers of the EU3 (Great Britain, France, Germany) advocate Iran’s referral to the United Nations Security Council over its nuclear program.

January 13, 2006 – Mottaki states that if Iran is referred, its authorities below legislation shall be compelled to cease a few of its cooperation with the IAEA, together with random inspections.

February 4, 2006 – President Mahmoud Ahmadinejad orders Iran to finish its cooperation with the IAEA.

April 11, 2006 – Hashemi Rafsanjani, Iran’s former president, states that Iran has elevated the variety of functioning centrifuges in its nuclear amenities in Natanz and has produced enriched uranium from them.

August 31, 2006 – The IAEA points a report on Iran saying the Islamic republic “has not suspended its enrichment activities” regardless of at the present time’s deadline to take action. Iran can presumably face financial sanctions.

December 23, 2006 – The UN Security Council votes unanimously to impose sanctions in opposition to Iran for failing to droop its nuclear program.

February 22, 2007 – The IAEA points a press release saying that Iran has not complied with the UN Security Council’s name for a freeze of all nuclear exercise. Instead, Iran has expanded its uranium enrichment program.

March 24, 2007 – The United Nations adopts Resolution 1747 which toughens sanctions in opposition to Iran. The sanctions embrace the freezing of belongings of 28 people and organizations concerned in Iran’s nuclear and missile applications. About a 3rd of these are linked to the Iranian Revolutionary Guard, an elite army corps.

May 23, 2007 – The IAEA delivers its report back to the United Nations on Iran’s nuclear actions. The report states that not solely has Iran failed to finish its uranium enrichment program however has in truth expanded its exercise.

June 21, 2007 – Iran’s Interior Minister Mostapha PourMohamedi claims, “Now we have 3,000 centrifuges and have in our warehouses 100 kilograms of enriched uranium.” …”We also have more than 150 tons of raw materials for producing uranium gas.”

December 2007 – A US intelligence report finds that Iran deserted a nuclear weapons program in 2003.

February 20, 2009 – The Institute for Science and International Security experiences that Iranian scientists have reached “nuclear weapons breakout capability.” The report concludes Iran doesn’t but have a nuclear weapon however does have sufficient low-enriched uranium for a single nuclear weapon. An official on the IAEA cautions about drawing such conclusions. The IAEA says Iran’s inventory of low-enriched uranium must be became extremely enriched uranium to change into weapons-grade materials.

February 25, 2009 – Iran runs assessments at its Bushehr nuclear energy plant utilizing “dummy” gasoline rods loaded with lead rather than enriched uranium to simulate nuclear gasoline. A information launch distributed to reporters on the scene states the take a look at measured the “pressure, temperature and flow rate” of the power to ensure they have been at acceptable ranges. Officials say the following take a look at will use enriched uranium, however it’s not clear when the take a look at shall be held or when the power shall be totally operational.

September 21, 2009 – In a letter to the IAEA, Iran reveals the existence of a second nuclear facility. It is situated underground at a army base, close to town of Qom.

October 25, 2009 – IAEA inspectors make their first go to to Iran’s newly disclosed nuclear facility close to Qom.

February 18, 2010 – In a press release, the IAEA experiences that it believes Iran could also be working in secret to develop a nuclear warhead for a missile.

August 21, 2010 – Iran begins fueling its first nuclear power plant, within the metropolis of Bushehr.

December 5, 2010 – Ali Akbar Salehi, Iran’s atomic chief and performing overseas minister, broadcasts that Iran’s nuclear program is self-sufficient and that Iran has begun producing yellowcake, an intermediate stage in processing uranium.

January 8, 2011 – Salehi experiences that Iran can now create its personal nuclear gasoline plates and rods.

September 4, 2011 – Iran broadcasts that its Bushehr nuclear energy plant joined the electrical grid September 3, making it the primary Middle Eastern nation to provide business electrical energy from atomic reactors.

September 5, 2011 – In response to Iran’s nuclear chief stating that Iran will give the IAEA “full supervision” of its nuclear program for 5 years if UN sanctions are lifted, the European Union says that Iran should first adjust to worldwide obligations.

November 8, 2011 – The IAEA releases a report saying that it has “serious concerns” and “credible” data that Iran could also be creating nuclear weapons.

January 9, 2012 – The IAEA confirms that uranium enrichment has begun on the Fordo nuclear facility within the Qom province in northern Iran.

January 23, 2012 – The European Union broadcasts it can ban the import of Iranian crude oil and petroleum merchandise.

January 29, 2012 – A six-member delegation from the IAEA arrives in Tehran for a three-day go to, shortly after the EU imposes new sanctions geared toward slicing off funding to the nuclear program.

January 31, 2012 – In Senate testimony James Clapper, Director of National Intelligence, says there is not any proof Iran is constructing a nuclear bomb. CIA Director David Petraeus agrees.

February 15, 2012 – Iran hundreds the primary domestically produced nuclear gasoline rods into the Tehran analysis reactor.

February 21, 2012 – After two days of talks in Iran in regards to the nation’s nuclear program, the IAEA expresses disappointment that no progress was made and that their request to go to the Parchin army base was denied.

March 28, 2012 – Discussions relating to Iran’s nuclear future stall.

April 14, 2012 – Talks resume between Iran and 6 world powers over Iranian nuclear ambitions in Istanbul, Turkey.

May 25, 2012 – An IAEA report finds that environmental samples taken on the Fordo gasoline enrichment plant close to town of Qom have enrichment ranges of as much as 27%, increased than the earlier stage of 20%.

June 18-19, 2012 – A gathering is held between Iran and the P5+1 (United States, France, Russia, China, Great Britain and Germany) in Moscow. No settlement is reached.

June 28, 2012 – Iranian negotiator, Saeed Jalili writes to European Union overseas coverage chief Catherine Ashton warning world powers to keep away from “unconstructive measures” such because the oil embargo that is about to enter impact and that was agreed upon by the EU in January.

July 1, 2012 – A full embargo of Iranian oil from the EU takes impact.

August 30, 2012 – A UN report finds that Iran has stepped up its manufacturing of high-grade enriched uranium and has re-landscaped Parchin, one among its army bases, in an obvious effort to hamper a UN inquiry into the nation’s nuclear program.

September 24, 2013 – During a speech on the UN General Assembly, Iranian President Hassan Rouhani says “Nuclear weapons and different weapons of mass destruction haven’t any place in Iran’s safety and protection doctrine, and contradict our fundamental religious and ethical convictions.”
October 16, 2013 – The newest discussions between Iran and the six world powers heart on a proposal put forth by Iran to acknowledge the peaceable nature of its nuclear power pursuits. The meeting is described as “substantive and forward-looking.”
November 24, 2013 – Six world powers and Iran reach an agreement over Iran’s nuclear program. The deal calls on Iran to restrict its nuclear actions in return for lighter sanctions.

January 12, 2014 – It is introduced that Iran will start eliminating a few of its uranium stockpile on January 20.

January 20, 2014 – Iran’s nuclear spokesman Behrouz Kamalvandi tells state-run information company IRNA that Iran has started suspending high levels of uranium enrichment.

January 20, 2014 – The European Union broadcasts that it has suspended sure sanctions in opposition to Iran for six months.

February 20, 2014 – Following talks in Vienna, EU overseas coverage chief Catherine Ashton and Iranian Foreign Minister Mohammad Javad Zarif announce {that a} deal on the framework for comprehensive negotiations over Tehran’s nuclear program has been reached.
November 24, 2014 – The deadline for a final nuclear agreement between Iran and the UN Security Council’s P5+1 countries has been set for July 1, 2015.
April 2, 2015 – Negotiators from Iran, the United States, China, Germany, France, Britain and Russia attain a framework for an agreement on Iran’s nuclear capabilities, which incorporates reducing its stockpile of low-enriched uranium by 98%. The deadline for the entire settlement is July 1.
April 9, 2015 – Rouhani broadcasts that Iran will solely signal a last nuclear settlement if financial sanctions are lifted on the first day of implementation.
July 14, 2015 – A deal is reached on Iran’s nuclear program. The Joint Comprehensive Plan of Action (JCPOA) reduces the variety of Iranian centrifuges by two-thirds. It locations bans on enrichment at key amenities, and limits uranium analysis and improvement to the Natanz facility.

July 20, 2015 – The UN Security Council endorses the nuclear deal.

January 16, 2016 – IAEA Director General Yukiya Amano says Iran has accomplished all the mandatory steps agreed below the nuclear deal, and that every one members can begin implementing the JCPOA.
March 8-9, 2016 – Iran test-fires two Qadr ballistic missiles throughout a large-scale army drill, based on Iran’s state-run Press TV. US officials say that the tests do not violate the JCPOA but are very likely in breach of a UN resolution calling on Iran not to undertake ballistic missile activity.
January 29, 2017 – Iran launches a medium-range ballistic missile, its first missile take a look at since Donald Trump grew to become US president, however the take a look at fails, based on data given to CNN by a US protection official. National Security Adviser Michael Flynn says the United States has put “Iran on notice.”
February 3, 2017 – In response to the January 29 missile take a look at, the US Treasury Department says it is applying sanctions on 25 people and corporations related to Iran’s ballistic missile program and people offering help to Iran’s Islamic Revolutionary Guard Corps’ Qods Force. Flynn says the assessments have been in defiance of a UN Security Council decision that bars Iran from taking steps on a ballistic missile program able to launching nuclear weapons.

September 20, 2017 – Rouhani says, “It will be a great pity if this agreement were destroyed by rogue newcomers to the world of politics,” in a transparent reference to Trump’s tackle to the UN General Assembly on September 19th, the place he supplied scathing criticism of each Iran and the 2015 worldwide settlement.

October 13, 2017 – Trump decertifies Iran’s compliance with the nuclear agreement, declaring that the Obama-era pact was not in US pursuits and unveiling a tricky new coverage towards the Islamic Republic. The transfer stops wanting utterly scrapping the settlement, as an alternative kicking it to Congress, who then has 60 days to find out a path ahead. Congress permits the 60-day deadline to move with out motion.
January 12, 2018 – Trump agrees to waive key nuclear-related sanctions against Iran as part of the 2015 deal, but delivers a stark ultimatum to European allies: “Fix the deal’s disastrous flaws, or the United States will withdraw.” Trump {couples} his waiver announcement with new sanctions on 14 Iranian people and entities which have dedicated human rights abuses or supported Iran’s ballistic missile applications, that are outdoors the scope of the nuclear deal. The most outstanding of the targets within the newest sanctions is Ayatollah Sadeq Amoli Larijani, the pinnacle of Iran’s judicial system.
May 8, 2018 – Trump announces that the United States will withdraw from the JCPOA and shall be imposing “the highest level of economic sanction” in opposition to Iran. In Tehran, Rouhani says Iran will take a couple of weeks to resolve how to answer the US withdrawal, however Rouhani says he had ordered the country’s “atomic industry organization” to be prepared to “start our industrial enrichment without limitations.”
May 21, 2018 – Speaking on the Heritage Foundation, US Secretary of State Mike Pompeo says the Trump administration is “open to new steps” with Iran, together with a diplomatic relationship. Part of 12 preconditions: Iran should acknowledge previous army dimensions of its nuclear program and increase entry given to nuclear inspectors. The United States will then be keen to finish sanctions, re-establish business relationships and permit Iran to have superior know-how.
March 22, 2019 – The US State and Treasury departments sanction 14 individuals and 17 entities linked to SPND, Iran’s group for protection, innovation and analysis. In saying the sanctions, senior administration officers recommend repeatedly that the existence of SPND and its subordinate organizations may present cowl for them to proceed missile-related exercise.
May 16, 2019 – A US official with knowledge of the situation tells CNN that there are a number of pictures of economic Iranian ships carrying missiles and different munitions.
June 17, 2019 – Iran has increased its low-enriched uranium production and in 10 days will pass the 300 kilogram limit it’s allowed to stockpile below the nuclear deal, based on Kamalvandi.
July 7, 2019 – At the tip of a 60-day ultimatum which Iran gave to the JCPOA’s European signatories to ease sanctions, spokesman Ali Rabiei says Iran will enrich uranium past the agreed upon limit of 3.67% purity.
September 23, 2019 – In an interview with CNN’s Christiane Amanpour, Zarif outlines a proposal for an agreement that would augment the defunct nuclear deal. In return for lifting sanctions, Iran could be ready to signal an extra protocol, permitting for extra intrusive inspections of the nation’s nuclear amenities at an earlier date than that set out beforehand. Khamenei would additionally enshrine a ban on nuclear weapons in legislation, Zarif says.
September 26, 2019 – Rouhani confirms a report by Reuters that Iran is using advanced models of centrifuges to enrich uranium. He says Iran has no plans to extend the enrichment stage and can resume talks with the United States if sanctions are lifted.
November 5, 2019 – Rouhani announces Iran will begin injecting uranium gas into 1,044 centrifuges that had been spinning empty at its Fordow plant. The transfer marks a break from the phrases of the accord, which restricted Iran to working round 5,000 older-model centrifuges.
November 8, 2019 – In a press release following a November 7 particular assembly of the IAEA Board of Governors, Pompeo expresses concern about the temporary detention of an IAEA inspector and “potential undeclared nuclear materials” in Iran.
December 4, 2019 – The United Nations releases a letter authored by ambassadors from France, Germany and the United Kingdom who allege that Iran has developed nuclear-capable ballistic missiles. The letter lists 4 examples and cites footage of a take a look at flight of a brand new Shahab-Three ballistic missile, which has a booster “technically capable of delivering a nuclear weapon.”
January 5, 2020 – After a cabinet meeting in Tehran, Iran announces that it will no longer limit itself to restrictions contained in the JCPOA. In a press release, Iran signifies it “will return to JCPOA limits once all sanctions are removed from the country.”
March 3, 2020 – In a report back to member states, and obtained by CNN, the IAEA says that Tehran’s stockpiles of low enriched uranium now far exceed 300 kilograms, the limit set by the 2015 Iran nuclear deal. The report notes that Iran has practically tripled its stockpile of low enriched uranium since November 2019, indicating a major bounce in manufacturing.

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