The International Atomic Energy Agency said its knowledge of Iran’s nuclear programme is starting to diminish, as the southwestern Asian country continues to forbid the access of UN inspectors to its nuclear facilities.

Even so, IAEA received news that 13 uranium enrichment cascades are being build in the Iran since members of the autonomous organization last visited the country.

After Iran received several warnings, financial and diplomatic sanctions from the international community for breaking the Non-Proliferation Treaty, the Tehran government consequentially denied the access of nuclear inspectors and pushed forward with its program.

The UN Security Council imposed several deadlines for Iran to stop uranium enrichment, the last expiring on May 24. UN member countries believe Tehran is building nuclear weapons under the umbrella of a so-called energy production program, allegations vehemently denied by Iranian authorities.

Iranian President Mahmoud Ahmadinejad said a goal to install 3,000 centrifuges by June was set and at the current rhythm of work the desideratum isn’t impossible to reach.

The Unite States is a vehement opponent of Iran and decided to act in consequence, starting negotiations with the Czech Republic and Poland for the installment of a missile defence shield on their territory in order to foresee a long-range missile attack from Iran and other nuclear-developed countries.