Iran's previous suspension: Iran said that a previous agreement to suspend uranium enrichment for two years in 2004 did not yield any tangible results for any party. Iran expressed an official concern to disclose more information to the IAEA because of the repeated military threats made by the West since 2005.[2] Subsequently, the IAEA declared that it was unable to conclude there are no undeclared nuclear materials or activities in Iran and has referred the file to the UNSC.[3]