The United States is working with European allies and other governments over a possible U.N. response to what the Bush administration characterizes as Iran’s inadequate answer to demands that it cease uranium enrichment. Iran maintains it has offered “positive and clear signals” to resolve the dispute over its nuclear program, but could face U.N. sanctions unless it reverses course and agrees to a verifiable halt to enrichment activities that can be a precursor to the manufacture of nuclear weapons. Full Story