Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Ahmadinejad Denies Nuclear Trigger Report VOA News 22 December 2009 Iranian President Mahmoud Ahmadinejad has dismissed a British newspaper report that says Iran is working on a trigger for a nuclear bomb. In a television interview broadcast Monday in the United States - by the ABC network - reporter Diane Sawyer offered Mr. Ahmadinejad a copy of a document obtained by The Times of London which purportedly contained details of Iran's work on a nuclear initiator. The Iranian president waved the document away and said it had been fabricated by the U.S. government. An advisor to President Obama said Mr. Ahmadinejad's charge is nonsense. Also Monday, the top U.S. military officer said the Pentagon must be ready with military options against Iran's nuclear program in the event the president calls for them. Admiral Mike Mullen - the chairman of the Joint Chiefs of Staff - said he believes diplomacy offers the best chance to resolve the dispute over Iran's nuclear program. The admiral added that military action remains an option but that it would have "limited results." Western nations accuse Iran of seeking to develop a nuclear weapon under the guise of a civilian nuclear program, but Iran insists its program is purely peaceful. Tehran's chief nuclear negotiator, Saeed Jalili, visited Tokyo Monday to meet with senior officials. A Japanese official said Foreign Minister Katsuya Okada told Jalili he was very concerned about Tehran's nuclear program. Jalili told reporters that the dropping of an atomic bomb on Hiroshima during World War II was "a crime" that "must never be repeated." U.S. officials have said Iran will face consequences from the global community if it continues to rebuff efforts to ensure the peaceful application of its nuclear program. .