White House Rivals Clash Over Iran

Democratic presidential candidate Barack Obama has insisted Iran's missile tests proved a need for direct US talks with Tehran.

But Republican White House hopeful John McCain emphasised sanctions and an anti-missile shield.

Iran's launching of nine long-range and medium-range missiles reverberated across the US campaign trail and both candidates were quick to offer their ideas on forcing Tehran to back down.

The US suspects Tehran is developing a nuclear weapon, a charge Iran denies.

Neither Mr Obama nor Mr McCain discussed a military option against Iran, emphasising diplomatic activity instead.