SEOUL - A senior US official on Monday said the situation over Iran's nuclear program was becoming increasingly worrying and an urgent diplomatic solution needs to be found.
The United States and Israel have not ruled out military action against Iran's nuclear facilities if diplomacy fails to resolve a dispute over a program they suspect is aimed at developing atomic weapons.
Iran denies it is seeking nuclear weapons and says it would respond to any strike by attacking Israel and US interests in the Gulf.
"Iran is violating international obligations and norms. It is becoming a pariah state," Robert Einhorn, the US State Department senior adviser for non-proliferation and arms control, told a news conference in the South Korean capital.