[4] The Guardian`s website: www.theguardian.com/world/2015/apr/02/iran-nuclear-talks-timeline In 2020, Trump and Pompeo claimed that the United States remained a “participant” in the agreement, although they formally withdrew in 2018 to convince the UN Security Council to re-impose sanctions on Iran after the U.S. withdrew for its violations of the agreement. The agreement provided for a liquidation procedure between the signatories in the event of an infringement, but this process had not yet taken place. [405] After the IAEA confirmed that Iran met the JCPOA requirements, all nuclear sanctions were lifted by the United Nations, the European Union and the United States on 16 January 2016. [370] In the 2000s, Iran increased its nuclear program, creating tensions with Western countries. In August 2002, Iran`s National Resistance Council – a dissident group – publicly revealed the existence of two undeclared nuclear facilities: the Arak heavy water plant and the Natanz enrichment plant. Inspectors from the International Atomic Energy Agency (IAEA) visited Natanz, and in May 2003, Iran authorized IAEA inspectors to visit the Kalaye Electric Company, but refused to allow them to take samples. In June 2003, Iran conducted negotiations with France, Germany and the United Kingdom (EU 3) on the prospect of a Unsc proposal. However, the United States has refused to be involved in these negotiations. In October 2003, a so-called Tehran declaration was concluded between Iran and the EU3: Iran declared its readiness to cooperate fully with the IAEA and temporarily suspend the complete enrichment of uranium. This was followed by the Paris Agreement of November 2004, in which Iran agreed to temporarily suspend enrichment and conversion activities. In 2005, Mahmoud Ahmadinejad was elected President of Iran and, from the beginning, outlined his policy for the development of the country`s nuclear program.

The following year, the United Nations adopted its first resolution calling on Iran to cease its uranium enrichment and processing activities. Between 2006 and 2010 the United Nations Security Council adopted a total of six resolutions (1696, 1737, 1747, 1803, 1835, 1929) gradually imposing sanctions on Iran, including freezing the assets of individuals and companies linked to the enrichment programme and prohibiting the supply of nuclear technology to the country. At the same time, the EU and the United States have adopted unilateral financial sanctions against Iran.