The JCPOA, signed in July 2015 and entered into force the following January, provides for restrictions on Iran`s civilian enrichment program. China, France, Russia, the United Kingdom and the United States – the five permanent members of the UN Security Council – negotiated the agreement with Germany; Together, they were known as P5-1. During nearly two years of negotiations, the Obama administration has said it wants to put off Iran`s nuclear program so that if Iran pursues a nuclear weapon, the time it would take to produce enough fissile material, an indicator known as the “escape period,” would be at least a year (before). (To reach a nuclear weapon, it would also require technology to turn that weapon into an explosive device that fits a warhead.) 19 October 2015: The first meeting of the Joint Commission will be held in Vienna. One of the objectives of the meeting is to create working groups that will be requested as part of the agreement, such as the Working Group on the Supply and Transformation of the Arak reactor. With Iran completing these measures, the United States and the international community will be able to begin the next phase under the JCPOA, which means that the United States will begin lifting its nuclear sanctions against Iran. However, a number of U.S. sanctions authorities and names will remain in place. Unlike AIPAC, another pro-Israel organization, J Street, supported the agreement and planned a $5 million advertising effort to encourage Congress to support it.   During the first week of August, J Street launched a three-week, $2 million advertising campaign to support the agreement with television commercials in Colorado, Maryland, Michigan, Oregon and Pennsylvania.
  From mid-July to early August, J Street reported having 125 meetings with congressional offices.  J Street also paid for prominent Israelis who supported the agreement (including Amram Mitzna, a retired Israeli general, Knesset member and mayor of Haifa) to fly to the United States to convince members of Congress to support it.  Others welcomed the JCPOA as a step forward.  The National Iranian American Council (NIAC), the Iranian American Bar Association and other organizations hosted the JCPOA.  The NIAC issued a statement saying: “Our negotiators have done their job to reach a strong nuclear agreement that prevents an Iranian nuclear weapon and prevents a catastrophic war.