Saudi king slams Iran as 'spearhead of global terrorism'

Saudi Arabia's King Salman today accused regional rival Iran of exporting extremist Islamic movements to the world and vowed to eliminate the Islamic State group.

"The Iranian regime has been the spearhead of global terrorism since the (Ayatollah Ruhollah) Khomeini revolution" in 1979, King Salman said in a speech to leaders including US President Donald Trump.

"We did not know terrorism and extremism until the Khomeini revolution reared its head," he said.

Saudi Arabia was also determined to "eliminate the Islamic State group", the king said.