Saudi Arabia has vowed firm retaliation after Houthi rebels carried out attacks on energy facilities in southern cities, an assault that Riyadh claims wounded at least 73 people. The strikes, which occurred on Tuesday, mark a significant escalation in the ongoing conflict between the Iran-aligned Houthi group and Saudi-backed forces in Yemen.

The Houthis announced on Tuesday that they had launched a "broad operation" targeting Saudi energy sites belonging to oil giant Aramco in southern regions. Saudi authorities confirmed that several facilities and installations related to the energy sector in the south were attacked, and they accused the Houthis of injuring 73 individuals, including women and children.

This renewed hostilities come as the Houthis are engaged in fighting with Yemen’s internationally recognized government, which is backed by Saudi Arabia. On Monday, the government announced counteroffensives against Houthi-held positions across several provinces. The current escalation is the most serious since a UN-brokered truce in 2022 halted large-scale fighting after eight years of conflict that devastated Yemen, one of the world's poorest countries.

The increased fighting also coincides with growing strategic importance of Yemen’s Bab al-Mandeb Strait, a vital Red Sea shipping route. This comes amid Iran's effective closure of the Strait of Hormuz, a key passageway for global oil and gas supplies. The Houthis have been attempting to advance towards the Bab al-Mandeb Strait, while government forces state their campaign aims to reclaim the Houthi-held capital, Sanaa.

Details of the fighting emerged with both sides presenting their accounts. The Houthis stated that Saudi Arabia launched multiple attacks on Houthi-held areas on Monday, using aircraft and cruise missiles on al-Jawf, al-Bayda, Marib, and Taiz provinces. The group further accused Saudi Arabia of conducting an air strike on a prison in al-Hazm, the capital of al-Jawf, which they claim resulted in seven deaths and seven injuries. The Saudi-led coalition has not immediately commented on these specific accusations.

Conversely, the Houthis claimed to have shot down Saudi reconnaissance drones over al-Jawf and al-Bayda. Meanwhile, Saudi Arabia's coalition spokesman, Major-General Turki al-Malki, detailed the Houthi attacks on Saudi cities including Abha, Khamis Mushait, Jazan, and Najran, specifying the number of injured.

The conflict in Yemen, which began in late 2014, has created one of the world's worst humanitarian crises. Millions have been displaced, and the country faces widespread famine and disease. The UN has repeatedly called for a ceasefire and a political solution to end the devastating war.

Analysts suggest that the current escalation could jeopardize ongoing peace efforts and further complicate the humanitarian situation. The involvement of Saudi Arabia and the strategic location of Yemen continue to make it a focal point in regional geopolitical tensions, with implications for global energy security and maritime trade routes.