After Iran's recent admission to running a secret second nuclear plant, President Barack Obama along with leaders from Britain and France are demanding the nation give international inspectors access to the facility.
Obama said the secret plant "deepens a growing concern" that Iran has failed to honor its obligations to the global community.
He said Iran, "is breaking rules that all nations must follow, endangering the world non-nuclear proliferation regime ... and the security of the world."
British Prime Minister Gordon chimed in, accusing the Muslim nation of 'serial deception."
CBN News Senior International Correspondent Gary Lane gave his insight on the recent revelation of Iran's nuclear facility. Click here to watch his comments.
Iran's announcement was made in a letter to the International Atomic energy agency on Monday.
Iran says it concealed the existence of the nuclear facility, which has been under American surveillance for years.
IAEA spokesman Marc Vidricaire confirmed receipt of the letter, saying the agency was informed "that a new pilot fuel enrichment plant is under construction." The letter said that the plant would not enrich uranium beyond the 5 percent level suitable for civilian energy production. That would be substantially below the threshold of 90 percent or more needed for a weapon.
Iran told the agency "that no nuclear material has been introduced into the facility," he said. "In response, the IAEA has requested Iran to provide specific information and access to the facility as soon as possible."
The Islamic republic is under three sets of United Nations Security Council sanctions for refusing to freeze enrichment, which can be used as both nuclear fuel and warhead material.
The officials said that Iran's letter contained no details about the location of the second facility, when - or if - it had started operations or the type and number of centrifuges it was running.
But one of the officials, who had access to a review of Western intelligence on the issue, said it was about 100 miles (160 kilometers) southwest of Tehran and was the site of 3,000 centrifuges that could be operational by next year.
Iran had previously acknowledged having only one such facility.
French President Nicolas Sarkozy has given Iran until December to open the secret plant or face sanctions.