On July 18, Obama dedicated his weekly radio address to the agreement, saying, «This agreement will make America and the world safer and safer,» refuting «a lot of overheated and often dishonest arguments about it»;  Obama said, «As commander-in-chief, I make no apologies for keeping this country safe and secure through hard diplomatic work on the mild warstorm.»  On July 23, in the White House cabinet room, Obama met with a dozen undecided Democrats in the House of Representatives to discuss the deal and seek their support.  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.  On October 13, 2017, President Trump announced that he would not proceed with the certification required by the Iran Nuclear Agreement Review Act, accused Iran of violating the «spirit» of the agreement, and urged the U.S. Congress and its international partners to «address the many serious breaches of the agreement so that the Iranian regime can never threaten the world with nuclear weapons.»  In September 2009, U.S. President Barack Obama revealed the existence of an underground enrichment site in Fordov, near Qom, and said, «Iran`s decision to build another nuclear power plant without notifying the IAEA poses a direct challenge to the basic pact at the heart of the non-proliferation regime.»  Israel has threatened to take military action against Iran.  In January 2016, when the IAEA declared that Iran would last until the end of the case, all international sanctions related to Iran`s nuclear program were lifted. The Joint Comprehensive Action Plan (JCPOA) is a detailed 159-page agreement containing five annexes, concluded by Iran and the P5-1 (China, France, Germany, Russia, the United Kingdom and the United States) on July 14, 2015. 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.