April 22, 2016: Iranian and U.S. officials meet in Vienna and sign a sales contract for Washington to buy 32 tons of water for $8.6 million. U.S. Secretary of State John Kerry and Iranian Foreign Minister Mohammad Javad Zarif are meeting in New York to discuss the implementation of the agreement. In statements after the meeting, Kerry said Washington was working to resolve confusion among foreign banks over sanctions lifted in January. In July 2015, conservative right-wing activist Larry Klayman filed a complaint against Obama and members of Congress in federal court in West Palm Beach, Florida, saying the agreement should be seen as a treaty requiring Senate ratification.   Klayman`s appeal was dismissed in September 2015 for failure to apply.  July 8, 2019: Iran informs the IAEA that uranium from the Natanz fuel enrichment pilot plant has been enriched to “about 4.5%” of uranium 235. The agency released a report confirming that Iran has exceeded the 3.67% ceiling set by the nuclear enrichment agreement. In an interview with reporters, US President Donald Trump warned: “Iran should be careful.” Iran – Iranian President Hassan Rouhani welcomed the development on Twitter.  He said that the nuclear agreement was only one step towards interaction with the world and all countries that want to respect the Iranian nation.  A week after the Lausanne negotiations, Iran`s Supreme Leader Ali Khamenei presented his vision for the negotiations. He did not accept or reject the framework agreement and said, “Nothing has been done yet.” With regard to sanctions, he said that all sanctions should be fully lifted on the day of the signing of the nuclear agreement.
   October 1, 2009: P5-1 and Iran agree “on the principle” of a proposal launched by the United States, supported by the IAEA, to encourage the RR. The proposal calls for Iran to export most of its 3.5% enriched uranium in exchange for 20 percent enriched uranium fuel for RRT, which has exhausted much of its pre-delivery supply. The agreement then met with Opposition from Iran on domestic policy, leading to attempts by Tehran to change the terms of the “fuel” exchange. In February 2006, Tehran halted the voluntary implementation of the additional protocol and resumed enrichment in Natanz. The IAEA Governing Council then voted in favour of notifying the UN Security Council of the Iranian case. On 15 March, the UNSC issued a statement from the President calling on Iran to cooperate with the IAEA.