Saudi warns of oil supply threat as allies rally against Iran

Saudi Arabia's King Salman on Saturday warned that "terrorist" attacks in the Gulf region could imperil global oil supplies, as he sought to galvanise support among Islamic countries against arch-rival Iran.

The king was speaking at a meeting of the 57-member Organization of Islamic Cooperation (OIC), the third and final Tehran-focused summit in the holy city of Mecca, marked by the notable absence of Iran and Turkey's leaders.

The world's top oil exporter has ratcheted up tensions with Iran after sabotage attacks damaged four vessels, two of them Saudi oil tankers, off the UAE and twin