A wave of attacks by Yemen's Iran-aligned Houthi group struck several cities in southern Saudi Arabia early Tuesday, wounding at least 73 people and igniting fires at oil facilities and utilities, according to Saudi authorities. The attacks, which targeted the cities of Abha, Khamis Mushait, Jazan and Najran, struck what the Saudi-led coalition described as "civilian and economic facilities."

Maj. Gen. Turki al-Malki, spokesperson for the Saudi-led coalition fighting in Yemen, said the attacks wounded 73 civilians, including women and children. Al-Malki described the strikes as a "dangerous escalation" and a "blatant violation" of Saudi Arabia's sovereignty, promising that the coalition would "take all necessary operational measures" to confront the threat.

Energy Facilities Hit, Operations Suspended

The Saudi Energy Ministry said the attacks caused fires at several energy sector facilities and installations in the kingdom's southern region, forcing a "temporary halt in some operations." The ministry said emergency teams were responding to the blazes and assessing damage.

The southern region is home to critical oil infrastructure, including the Jazan refinery, one of Saudi Arabia's largest with a capacity of 400,000 barrels per day, according to reports. The Houthis said they had launched a broad operation deep into Saudi territory, using drones and missiles to strike a Saudi airbase in Khamis Mushait and assets belonging to state oil company Aramco in Abha, Najran and Jazan.

Houthis Claim Retaliation for Saudi Strikes

The Houthi military spokesman, Brig. Gen. Yahya Saree, said the group had fired "dozens of ballistic missiles and drones" at oil and economic facilities, as well as an air base in southern Saudi Arabia. He said the attacks were retaliation for recent Saudi airstrikes on Houthi-controlled areas across Yemen.

The strikes came hours after the Houthis accused Saudi Arabia of carrying out an airstrike on a prison in Yemen's northern province of Jawf, killing at least seven people, including a child, and wounding seven others. Riyadh did not immediately comment on that allegation.

Escalation in Renewed Conflict

The attacks mark a significant escalation in the renewed conflict between Saudi Arabia and the Houthis, which has intensified after weeks of clashes between the Houthis and Saudi-backed government forces in Yemen shattered a four-year truce in the country's civil war. The Houthis have been launching attacks towards Saudi Arabia since they declared a naval blockade against Riyadh in July, with strikes targeting its vessels in the Red Sea.

Saudi Arabia's foreign ministry condemned the attacks, saying the kingdom would "take all necessary measures to defend its sovereignty" and calling for an "immediate halt to all forms of escalation practised by this militia." Foreign Minister Prince Faisal bin Farhan al Saud said the kingdom "strongly condemns" the Houthi attacks but maintained that diplomacy remains possible to end the fighting.

Regional and Economic Implications

The escalation comes at a time of heightened tensions across the Middle East, with the strategic importance of Yemen's Bab al-Mandeb Strait growing amid Iran's effective closure of the Strait of Hormuz. The fighting threatens to squeeze shipping through the Bab al-Mandeb, a critical route for global oil trade, adding pressure to already limited oil supplies.

Following the attacks, Brent crude futures rose $1 to $98 a barrel, according to Reuters, as markets reacted to the disruption risks. Southern Saudi Arabia's oil infrastructure, including the Jazan refinery, is vital to the kingdom's export capacity, particularly as Riyadh has redirected more crude toward the Red Sea due to restrictions in the Strait of Hormuz.