The Iranian nuclear challenge

In December 2003 Iran signed an Additional Protocol to its Safeguards Agreement with the International Atomic Energy Authority. The signing followed 18 months of mounting international pressure on Iran to prove its benign motives following revelations about past failures to declare work on uranium enrichment and plutonium separation-the two routes to producing nuclear weapons-grade material. Although Iran has strenuously denied having a nuclear weapons programme, both the United States and the European Union have been highly suspicious. However, their responses to Iran have shown a divergence in how to counter the proliferation of weapons of mass destruction. The way forward on Iran will be influenced significantly by the extent to which the American and European approaches can be reconciled or otherwise.