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.   The Joint Comprehensive Action Plan (JCPOA) is a detailed 159-page agreement containing five annexes, concluded on 14 July 2015 by Iran and the P5-1 (China, France, Germany, Russia, the United Kingdom and the United States). The nuclear agreement was approved by UN Security Council Resolution 2231, adopted on 20 July 2015. Iran`s compliance with the JCPOA nuclear provisions will be verified by the International Atomic Energy Agency (IAEA) in accordance with certain requirements of the agreement. On May 8, 2018, President Trump announced that the United States would withdraw from the JCPOA and resume U.S. nuclear sanctions against the Iranian regime. Negotiations between Iran and the P5-1 then continued.
A framework agreement was reached in Lausanne in April 2015. Intense marathon negotiations then continued, with the last meeting lasting 17 days in Vienna at the Coburg Palace.  Negotiations appeared to break up in several places, but negotiators reached an agreement.  When negotiators approached an agreement, U.S. Secretary of State John Kerry asked Iranian Foreign Minister Mohammad Javad Zarif to confirm directly that he was “entitled to reach an agreement, not only by the [Iranian] president, but also by the supreme leader?”  Zarif assured that he was.  The 2015 agreement was a simple agreement: Iran would accept strict rules and supervision of its nuclear activities in exchange for its return to the international community. At the hearing, Kerry, Lew and Moniz were “clearly in their statements that the agreement was the best thing to achieve and that without it, the international sanctions regime would collapse.”  Kerry warned that the United States would be “on its own” if it fell back on a multilateral agreement alongside the five world powers, adding that the belief that “a kind of unicorn agreement with Iran`s total surrender” could be achieved, “a fantasy, simple and simple.”  The Washington Post reported: “Moniz appeared as the quiet center of the proceedings, began his interjections with recitations of what he called “facts”, and observed with leniency that the Republican characterizations were “false.”  At the hearing, Kerry, Lew and Moniz were confronted with “united Republican animus,”  with Republican senators who “had long and often heinous speeches denouncing what they called a fatal agreement and accused the government of dangerous naivety” and showed “little interest in the responses” of the three cabinet secretaries.  The Washington Post reported on twelve issues relating to the agreement on which the two parties disagreed during the oral proceedings.  At the time of the agreement, the administration of then-US President Barack Obama expressed confidence that the JCPOA would prevent Iran from building a nuclear program in secret.