After the UN's nuclear agency demanded Iran halt work on a uranium enrichment plant last week, Iran declared it would build 10 more such plants.
Following the International Atomic Energy Agency's condemnation, Iranian President Mahmoud Ahmadinejad also said Iran would study what it would need to do to enrich nuclear fuel it already has in order to prepare it for use in a medical reactor. Iran had previously agreed to rely on other nations to enrich its fuel.
The New York Times reports the plans seem to be an effort to retaliate against the IAEA's demands, and it's unclear if Iran has the technology to enrich its fuel for use in a medical reactor. In addition, most experts say the country does not have the capability to build additional plants, but some worry the move could lead to Iran withdrawing from the Nuclear Nonproliferation Treaty and result in fewer atomic inspectors in Iran.
International criticism has increased since Iran announced plans for the new plants. France's Foreign Minister said Iran is "playing an extremely dangerous game," according to the BBC.