F. Summary
18. The Agency has been able to continue to verify the non-diversion of declared nuclear material in Iran. However,  Iran has not  implemented  the modified  text of  its Subsidiary Arrangements General Part, Code 3.1, on the early provision of design information and has continued to refuse to permit the Agency to carry out design information verification at IR-40. 
19. Contrary  to  the  request  of  the  Board  of  Governors  and  the  Security  Council,  Iran  has  not implemented  the  Additional  Protocol,  which  is  a  prerequisite  for  the  Agency  to  provide  credible assurance  about  the  absence  of  undeclared  nuclear material  and  activities.  Nor  has  it  agreed  to  the Agency?s request  that Iran provide, as a  transparency measure, access  to additional  locations related, inter alia, to the manufacturing of centrifuges, R&D on uranium enrichment, and uranium mining and 
milling, as also required by the Security Council. 
20. Regrettably,  as  a  result  of  the  continued  lack  of  cooperation  by  Iran  in  connection  with  the remaining  issues which  give  rise  to  concerns  about  possible military  dimensions  of  Iran?s  nuclear programme,  the  Agency  has  not  made  any  substantive  progress  on  these  issues.  As  indicated  in previous reports of the Director General, for the Agency to make such progress, Iran needs to provide substantive  information,  and  access  to  relevant  documentation,  locations  and  individuals,  in 
connection with  all  of  the  outstanding  issues. With  respect  to  the  alleged  studies  in  particular,  an important  first  step  is  for  Iran  to  clarify  the  extent  to  which  information  contained  in  the documentation which  Iran was  shown,  and  given  the  opportunity  to  study,  is  factually  correct  and where, in its view, such information may have been modified or relates to non-nuclear purposes. 
21. Unless  Iran  implements  the  above  transparency  measures  and  the  Additional  Protocol,  as required by  the Security Council,  the Agency will not be  in a position  to provide credible assurance about the absence of undeclared nuclear material and activities in Iran. The Director General continues to urge Iran to implement all measures required to build confidence in the exclusively peaceful nature of  its nuclear programme at  the earliest possible date. The Director General, at  the same  time, urges Member  States which  have  provided  such  documentation  to  the Agency  to  agree  to  the Agency?s 
providing copies thereof to Iran.
22. Contrary  to  the decisions of  the Security Council, Iran has not suspended  its enrichment related activities or its work on heavy water-related projects,  including  the  construction of  the heavy water moderated research reactor, IR-40, and the production of fuel for that reactor. 
23. The Director General will continue to report as appropriate.