Gulf Arab states canceled planned talks with Iran on Monday as Yemen’s Houthis launched a fresh attack on Saudi Arabia, widening a conflict that has further threatened global oil supplies.

The Iran-aligned Houthis in Yemen said they fired ⁠dozens of missiles and drones Monday at a Saudi military airbase ⁠in Khamis Mushait, near the border, hitting aircraft hangars, radar systems, runways and ammunition depots. They described the attack as retaliation for hundreds of Saudi airstrikes on Yemen in recent days.

Saudi authorities announced brief emergency alerts there and in three other southern cities which have previously ​come under Houthi fire.

The Houthis launched a lightning advance last week in Yemen, culminating in the seizure of an ​island ⁠in the mouth of the Red Sea on Friday. A separate attack that day, which Riyadh blamed on Iran-backed fighters in Iraq, knocked out Saudi Arabia's east-west pipeline, the main route for Middle East oil bypassing the blockaded Strait of Hormuz.

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