The Iranian-backed Houthi militia said Saudi forces carried out 54 airstrikes across five Yemeni regions on Wednesday, as renewed fighting threatens to push Yemen back into a full-scale civil war. Saudi officials have not publicly addressed the claim, which came a day after the kingdom vowed retaliation for a Houthi attack that injured 73 civilians in southern Saudi Arabia. The Houthi military spokesman Yahya Saree identified the affected areas as the Houthi-controlled provinces of Al-Bayda and Saada and the contested provinces of Taiz, Marib and Al-Jawf. The Saudi-backed Yemeni army separately said it had conducted airstrikes in some of the same areas during the previous 24 hours. The Houthis and the Saudi-backed Yemeni government have been fighting since 2014, when the militia seized Yemen’s capital and established control over large parts of the north. A fragile cease-fire was reached in 2022, but recent hostilities have raised the risk of renewed war. Traffic through the Strait of Hormuz has also been disrupted by the broader conflict between the United States and Iran. The Houthis appear to have launched an offensive aimed at gaining control of shipping routes to the Red Sea, while attacks on Saudi energy facilities and a blockade of Saudi shipping through the Red Sea have prompted Saudi reprisals.