Iran continues to hide its nuclear weapons program from the IAEA

From Reuters:

Iran has failed to address concerns about suspected atomic bomb research by an agreed deadline, the U.N. nuclear watchdog said on Friday, a setback to hopes for an end to an international stand-off over Tehran's atomic activity.

The lack of movement in an inquiry by the International Atomic Energy Agency will disappoint the West and could further complicate efforts by six world powers to negotiate a resolution to the decade-old dispute with Iran over its nuclear ambitions.

An IAEA report obtained by Reuters showed that little substantive headway had so far been made in the U.N. agency's long-running investigation into what it calls the possible military dimensions of Iran's nuclear program.

The Islamic Republic has implemented just three of five nuclear transparency steps that it was supposed to by Aug. 25 under a confidence-building deal it reached with the IAEA in November, according to the quarterly report.

Crucially, it has not provided information on the two issues that are part of the IAEA's investigation: alleged experiments on explosives that could be used for an atomic device, and studies related to calculating nuclear explosive yields.

The report said Iran, where a president seen as pragmatic took office in 2013 and revived diplomacy with the West, told the IAEA last week that most suspicions over its program were "mere allegations and do not merit consideration".

A Vienna-based diplomat called that statement "worrying".

The IAEA had also observed via satellite imagery "ongoing construction activity" at Iran's Parchin military base, the report said. Western officials believe Iran once conducted explosive tests there of relevance in developing a nuclear weapon and has sought to "cleanse" it of evidence since then. Iran has long denied U.N. nuclear inspectors access to the base.

The actual report is here, but the Reuters summary is pretty good. Here are the relevant parts:

The Agency remains concerned about the possible existence in Iran of undisclosed nuclear related activities involving military related organizations, including activities related to the development of a nuclear payload for a missile. Iran is required to cooperate fully with the Agency on all outstanding issues, particularly those which give rise to concerns about the possible military dimensions to Iran’s nuclear programme, including by providing access without delay to all sites, equipment, persons and documents requested by the Agency.

The Annex to the Director General’s November 2011 report (GOV/2011/65) provided a detailed analysis of the information available to the Agency at that time, indicating that Iran has carried out activities that are relevant to the development of a nuclear explosive device. This information is assessed by the Agency to be, overall, credible.57 The Agency has obtained more information since November 2011 that has further corroborated the analysis contained in that Annex.

In February 2012, Iran dismissed the Agency’s concerns, largely on the grounds that Iran considered them to be based on unfounded allegations.58 In a letter to the Agency dated 28 August 2014, Iran stated that “most of the issues” in the Annex to GOV/2011/65 were “mere allegations and do not merit consideration”.

Since the Director General’s previous report, at a particular location at the Parchin site, the Agency has observed through satellite imagery ongoing construction activity that appears to show the removal/replacement or refurbishment of the site’s two main buildings’ external wall structures. One of these buildings60 has also had a section of its roof removed and replaced. Observations of deposits of material and/or debris, and equipment suggest that construction activity has expanded to two other site buildings. These activities are likely to have further undermined the Agency’s ability to conducteffective verification. It remains important for Iran to provide answers to the Agency’s questions and access to the particular location in question.

But...but...Rouhani is so moderate!