Despite the Obama administration's assurance that the nuclear deal with Iran would be comprehensive and preventative in the country building a nuclear weapon, Iran's supreme leader Ayatollah Ali Khamenei says he will not allow any foreign inspections of his nuclear facilities.

The New York Times quotes Khamenei in a recent speech to the graduating class of the Imam Hussein Military University in Tehran:

They say new things in the negotiations. Regarding inspections, we have said that we will not let foreigners inspect any military center.

And not only would inspections from foreign entities be off the table as declared by Khamenei, but also interviews of the country's nuclear scientists. It is reported that Iran's top nuclear scientist, Mohsen Fakhrizadeh, is considered on par with J. Robert Oppenheimer, the head of the Manhattan Project. The NYT notes that for the last 15 years, Fakhrizadeh has been sheltered from inspections and interviews. His team of scientists would be "best suited to explain, or rebut, documents suggesting that Iran has extensively researched warheads, nuclear ignition systems and related technologies."

Even though Secretary of State John Kerry has repeatedly expressed that Iran will have to comply with the nuclear deal's demands, the NYT's notes that it is unclear how this will be enforced: "[I]t seems likely that oil and financial sanctions would be lifted early in the process, before the explanations to inspectors could be finished."

This declaration by Khamenei will likely be one of many reasons the June 30th deadline will once again be postponed before a final deal can be reached, if at all. Iranian resistance to other nations meddling in its nuclear vision is nothing new. Khamenei has previously stated: "They say the right to interview nuclear scientists must be given. This means interrogation. I will not let foreigners come and talk to scientists and dear children of the nation who have developed this science up to this level.”

But the Obama administration remains confident. In an exclusive interview with The Atlantic, President Obama spoke of the deal:

Look, 20 years from now, I’m still going to be around, God willing. If Iran has a nuclear weapon, it’s my name on this. I think it’s fair to say that in addition to our profound national-security interests, I have a personal interest in locking this down.