NEW YORK — A former deputy director of the International Atomic Energy Agency (IAEA) raised questions about the credibility of that agency’s inspection and verification system for Iran’s nuclear program as required under the U.S.-brokered international nuclear accord with Tehran.

Speaking in a radio interview with this reporter, Dr. Olli Heinonen, former deputy director general of the IAEA and head of its Department of Safeguards, questioned how the IAEA can credibly inspect Iran’s nuclear program without gaining access to Iranian military bases.

Heinonen made the comments last night on his talk radio program, “Aaron Klein Investigative Radio,” broadcast on New York’s AM 970 The Answer and NewsTalk 990 AM in Philadelphia.

The IAEA, headquartered in Vienna, is an international body that reports to the United Nations General Assembly and Security Council. It is the agency charged with ensuring Iran is complying with the Iran nuclear deal, known as the Joint Comprehensive Plan of Action (JCPOA).

Heinonen said he was “concerned” about the lack of IAEA access to Iran’s military bases.

He continued:

Military bases should not be sanctuaries. There is a special provision in the deal which asks the IAEA to monitor certain activities, so-called dual-use activities which can also be used for nuclear weapons purposes. IAEA has assessed that it has now verified that undertaking from Iran.

So it is hard for me to understand how you can verify that undertaking without visiting a military site and this is the most puzzling thing. And it goes to the credibility of the verification system.

How can the IAEA conclude that there have been no undeclared activities highlighted in JCPOA in those locations? This needs to be clarified and explained by the IAEA.

Last month, the IAEA declared that Iran is in compliance with the nuclear deal. However, U.S. Ambassador to the UN Nikki R. Haley and other administration officials have argued that the IAEA should have access to Iran’s nuclear bases.

Last week, Ali Shamkhani, Secretary of Iran’s Supreme National Security Council, ruled out any possibility of international access to Iran’s military bases, declaring the issue an “unnecessary and closed case.”

Also last week, Haaretz cited Israeli officials revealing that a “Western entity” provided the IAEA last year with information regarding sites that Iran did not officially report as part of its nuclear program and where Tehran is suspected of carrying out activities related to nuclear capabilities, including research and development.

While one such alleged site was a civilian facility, the report stated that Iran did not allow access to other sites, claiming they were military bases.

Haaretz reported:

Iranians refused to allow inspectors to visit a series of other suspicious sites, claiming they were military bases and, therefore, not covered by the nuclear accord and that they were not required to allow access to inspectors.

Aaron Klein is Breitbart’s Jerusalem bureau chief and senior investigative reporter. He is a New York Times bestselling author and hosts the popular weekend talk radio program, “Aaron Klein Investigative Radio.” Follow him on Twitter @AaronKleinShow. Follow him on Facebook.