President Barack Obama said Saturday that intelligence estimates show Iran is “a year or more away” from building a nuclear weapon. In an interview with AP, he acknowledged that US estimates were more conservative than those of Israel, which said Iran was much closer that that to building an atomic weapon. Obama also said the world must test whether Iran's President Hassan Rouhani was serious about resolving its nuclear dispute diplomatically. DEBKAfile: Tehran has the technology for building a nuclear bomb. By accelerating uranium enrichment, Iran could reach a capacity to assemble not one but two bombs.