This report on safeguards issues in the Islamic Republic of Iran (hereinafter referred to as Iran) responds to paragraph 7 of the Board of Governors’ resolution GOV/2003/69 of 12 September 2003. It covers relevant  developments from the time of the Director General’s visit to Iran on 20-21 February 2003 and Iran’s acknowledgement of its centrifuge enrichment programme, but concentrates on the period since his last report (GOV/2003/63 of 23 August 2003). This report begins with the background to the issues in question (Section A) and a chronology of recent events (Section B). Information on the Agency’s verification activities is summarized in Section C, organized according to the various technical processes involved (the details of which are set out in Annex 1). Section D provides a summary of the Agency’s findings, while Section E sets out its current assessment and next steps. Annexes 2 and 3 to this report contain, respectively, a list of the locations identified to date as relevant to the implementation of safeguards in Iran, and a map showing those locations. Annex 4 is a list of relevant abbreviations and terms used in the text of the report.