The United Nations' nuclear agency has found that Iran has acquired “sufficient information to be able to design and produce a workable” atom bomb, according to the agency’s report. The conclusions are tentative, the report stresses, and based on information from intelligence agencies and its own investigations. American intelligence officials said two years ago that Iran had stopped trying to design a nuclear weapon in 2003, but Britain, Germany, France, and Israel have disputed that finding in the past few months. Iran has done extensive research and testing on how to make each component of a weapon, the report found. The report represents the analysis of the U.N. agency’s senior staff, but its departing director, Mohamed ElBaradei, does not want the report made public and has cautioned that they have no concrete proof that Iran wants to make nuclear arms. Iran has agreed to allow inspectors this month to visit its most recently unmasked site in Qom, which it claims would only enrich uranium to produce nuclear power.