Saudi Arabia's King Salman on Sunday accused regional rival Iran of exporting extremist Islamic movements to the world and vowed to eliminate the Daesh group.
Addressing the opening session, Saudi King Salman Abdul Aziz said scourge of terrorism has become a threat to entire world and constructive cooperation between countries is imperative to eliminate terrorism from the world.
He said multi-national alliance has been formed to effectively cope with Islamic State terrorist group.
King Salman also emphasized the need of collective efforts for peace and stability in the world.
"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.
The Saudi leader's speech came minutes before a highly anticipated address by Trump, who arrived in the Sunni kingdom on Saturday on his first foreign tour since taking office.
The United States and Saudi Arabia on Saturday announced an arms deal worth almost $110 billion, described as the largest in US history.
