The Iran-backed Houthi rebels in Yemen said Wednesday that Saudi-backed forces had launched dozens of airstrikes overnight across four Yemeni provinces after rebel attacks on Saudi Arabia ignited fires at several oil facilities and wounded dozens of people.

Iran threatened the United States with "economic warfare" on Tuesday and said it had fired an advanced missile at U.S. warships, underscoring the risks of further escalation in ​the war only days after both sides traded blows again.

SAUDI Arabia has threatened to hit back after Iran-backed Houthis pounded the state with their worst attack in years. The barrage of missiles from Houthi rebels set oil facilities ablaze and

Attacks on energy-sector facilities in southern Saudi Arabia temporarily halted some operations.