(in the case of North Korea) at a minimum ending sensitive fuel cycle activities. According to Pierre Goldschmidt, former deputy director general and head of the department of safeguards at the IAEA, and Henry D. Sokolski, executive director of the Nonproliferation Policy Education Center, some other instances of safeguards noncompliance reported by the IAEA Secretariat (South Korea, Egypt) were never reported to the Security Council because the IAEA Board of Governors never made a formal finding of non-compliance. Though South Korea's case involved enriching uranium to levels near weapons grade, the country itself voluntarily reported the isolated activity and Goldschmidt has argued "political considerations also played a dominant role in the board's decision" to not make a formal finding of non-compliance. A 23 March 2012 US Congressional Research Service report quotes a 24 February IAEA report saying that Iran had stockpiled 240 pounds of 20-per-cent-enriched uranium – an enrichment level necessary for medical applications – as an indication of their capacity to enrich to higher levels. The authoritarian politics of Iran may pose additional challenges to a scientific program requiring cooperation among many technical specialists. Some experts argue that the intense focus on Iran's nuclear program detracts from a need for broader diplomatic engagement. US intelligence officials interviewed by The New York Times in March 2012 said they continued to assess that Iran had not restarted its weaponization program, which the 2007 National Intelligence Estimate said Iran had discontinued in 2003, although they have found evidence that some weaponization-related activities have continued. The Israeli Mossad reportedly shared this belief. 2002–2006 On 14 August 2002, Alireza Jafarzadeh, a spokesman for the National Council of Resistance of Iran, publicly revealed the existence of two nuclear sites under construction: a uranium enrichment facility in Natanz (part of which is underground), and a heavy water facility in Arak. It has been strongly suggested that intelligence agencies already knew about these facilities but the reports had been classified. The IAEA immediately sought access to these facilities and further information and co-operation from Iran regarding its nuclear program. According to arrangements in force at the time for implementation of Iran's safeguards agreement with the IAEA, Iran was not required to allow IAEA inspections of a new nuclear facility until six months before nuclear material is introduced into that facility. At the time, Iran was not even required to inform the IAEA of the existence of the