would not be able to verify the exclusively peaceful nature of Iran's nuclear program unless Iran adopted "transparency measures" which exceeded its safeguards agreement with the IAEA, since the IAEA does not verify the absence of undeclared nuclear activities in any country unless the Additional Protocol is in force. ElBaradei stated that "we have managed to clarify all the remaining outstanding issues, including the most important issue, which is the scope and nature of Iran's enrichment programme" with the exception of a single issue, "and that is the alleged weaponization studies that supposedly Iran has conducted in the past." According to the report, Iran had increased the number of operating centrifuges at its Fuel Enrichment Plant in Isfahan, and continued to enrich uranium. Contrary to some media reports which claimed that Iran had diverted uranium hexafluoride (UF6) for a renewed nuclear weapons program, the IAEA emphasized that all of the UF6 was under IAEA safeguards. This was re-iterated by IAEA spokesman Melissa Fleming, who characterized the report of missing nuclear material in Iran as being "fictitious." Iran was also asked to clarify information about foreign assistance it may have received in connection with a high explosive charge suitable for an implosion type nuclear device. Iran stated that there had been no such activities in Iran. The IAEA also reported that it had held a series of meetings with Iranian officials to resolve the outstanding issues including the "alleged studies" into nuclear weaponization which were listed in the May 2008 IAEA report. During the course of these meetings, the Iranians filed a series of written responses including a 117-page presentation which confirmed the partial veracity of some of the allegations, but which asserted that the allegations as a whole were based on "forged" documents and "fabricated" data, and that Iran had not actually received the documentation substantiating the allegations. According to the August 2007 "Modalities Agreement" between Iran and the IAEA, Iran had agreed to review and assess the "alleged studies" claims, as good faith gesture, "upon receiving all related documents." Iran's ambassador to the IAEA, Ali Asghar Soltaniyeh, accused the United States of preventing the IAEA from delivering the documents about the alleged studies to Iran as required by the Modalities Agreement, and stated that Iran had done its best to respond to the allegations but would not accept "any request beyond our legal obligation and particularly beyond the Work