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”; [190] 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.” [190] 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. [191] Some argue that deterrence is the key to ensuring that Iran not only respects the agreement, but also to prevent them from developing nuclear weapons. [379] Former Assistant Secretary for Non-Proliferation Robert Einhorn, a supporter of the agreement, wrote that it would be preferable to have permanent or longer-term restrictions on Iran`s enrichment program, but to clean up the prevention of a nuclear Iran, “provided that the United States and important partners maintain a strong and credible deterrent against a future Iranian decision to go to the bomb.” [380] According to Michael Eisenstadt, director of the Military and Security Studies Program at the Washington Institute for Near East Policy, “Iran`s deterrence of the development or acquisition of nuclear weapons will remain the central imperative that fuels American policy in the years to come.” [381] 26-27 November 2018: EU and Iranian officials meet in Brussels for the third high-level summit on international nuclear cooperation. The EU and Iran are reviewing past nuclear cooperation projects and discussing the ongoing transformation of the Arak reactor and the transformation of the Fordov plant into a research site. 20-24 November 2013: Iran and the P5-1 meet in Geneva to continue negotiations. On 23 November, the foreign ministers of the P5-1 will participate in the negotiations. On 24 November, Iranian Minister Javad Zarif and Catherine Ashton, head of the P5-1 negotiating team, signed an agreement called the Joint Plan of Action. It defines specific measures and a broad framework for each side, as part of a six-month agreement of the first phase, to guide negotiations for a comprehensive solution. The IAEA says Iran has already increased the production of enriched uranium – but it is not known how much. 15 December 2017: UN Secretary-General Antonio Guterres presents the semi-annual report on the implementation of Resolution 2231.