Nuclear Weapons - Western AssessmentsIsrael and the United States believed in 1992 that Iran would attain a military nuclear capability within eight to 10 years. In 1995 ACDA Director John Holum testified that Iran could have the bomb by 2003, though by 1997 he testified that Iran could have the bomb by 2005-2007. In the mid-1990's the view of the United States government was that Iran was implementing a military nuclear program that could achieve a weapons capability within five years, at the time meaning by the year 2000. As of 1998 the estimate of the US Central Command (CENTCOM) was that Iranian efforts could result in the development of a nuclear device by the middle of the next decade, that is, by the year 2005.
In a statement to the US public made 7 January 1998 and broadcast by Cable News Network, President Sayed Mohamad Khatami said, "we are not a nuclear power and do not intend to become one. We have accepted IAEA safeguards and our facilities are routinely inspected by that agency." Some western observers asserted that Khatami, a moderate cleric elected president of Iran in May 1997, had not taken charge of Iran's nuclear development program. Despite Khatami's emergence as a political figure, developments suggested that he was not in control of the military and security sphere.
In January 2000, marking a significant departure from previous assessments, the Central Intelligence Agency concluded that Iran might now be able to make a nuclear weapon. This evaluation was not based on evidence that Iran's efforts had achieved a breakthrough, but rather on the fact that the United States could not track with great certainty increased efforts by Iran to acquire nuclear materials and technology. Analysts at other intelligence agencies believed that Iran's efforts were still moving, albeit very slowly.
In an April 2004 speech, John R Bolton, the Bush Administration's primary policymaker on weapons of mass destruction, said: "If we permit Iran's deception to go on much longer, it will be too late. Iran will have nuclear weapons."
Convincing the rest of the world that Iran is making nuclear weapons allows the US to increase leverage and strengthen sanctions to force Iran to reduce their support of various Shia terrorist gropus, alter the nature of their "Islamic Repubic, and to be our buddy like the former Shah.
That doesn't mean they are not now making nuclear weapons. But it puts these accusations in a different light. It also shows how inaccurate predicting these things are.