US warns of challenge from Iran
Washington has warned that Iran’s nuclear programme is one of America’s biggest challenges, and refused to rule out any option including military. Senior officials were speaking a day after United Nations nuclear watchdog the IAEA decided to report Iran to the Security Council. America’s UN envoy told the BBC the issue would strongly test the council. Secretary of State Condoleezza Rice said earlier that Iran might present the US with its toughest challenge. Full Story