Iranian Foreign Minister Abbas Araghchi said on Saturday that Tehran supports a “political process” to resolve the conflict between Saudi Arabia and Yemen’s Houthi rebels.

The Houthis have repeatedly attacked Saudi targets, including energy facilities and Riyadh’s international airport, where 13 people were killed in a major attack last week.

“We support an inclusive and comprehensive political process as the only practical and sustainable way to resolve the issue,” Araghchi said in a speech at the Organisation of Islamic Cooperation in Baghdad.

Araghchi repeated Iran’s offer to mediate between the two sides. Deputy Foreign Minister Saeed Khatibzadeh previously said Riyadh has not responded to Iran’s overture.

On Friday, Iran denied having anything to do with the Houthi attacks, after Saudi Arabia accused Tehran of encouraging the group’s escalation.

In his speech, Araghchi also said “either we build security together, or we will endure insecurity together,” adding that Tehran was willing “to cooperate with all its brothers and neighbours to achieve the first option”.

The Houthis have repeatedly attacked Saudi airports, oil facilities and tankers after a truce in their long-running war with Yemen’s coalition government unravelled in July.

On Wednesday, Yemen’s Houthi rebels said they had targeted facilities belonging to Saudi Aramco, after Saudi officials reported a strike on a building in Riyadh housing the energy giant’s operations centre.

Powerful explosions also rattled the Saudi capital, as the coalition fighting the Houthis said it had intercepted a missile fired by the group towards Riyadh.

On Tuesday, Saudi Arabia launched strikes on Houthi-controlled areas of Yemen, targeting fuel and energy facilities it said were being used to support missile and drone attacks, as the Yemeni group threatened a “harsh and painful” response against Saudi airports, refineries and oil installations.

Hours later, Saudi authorities issued warnings of potential hostile aerial threats in the kingdom’s eastern province and Riyadh.

Loud explosions were heard near Saudi Aramco’s headquarters in Dhahran, according to witnesses. Later, a Saudi energy ministry official confirmed the attack. Saudi Arabia’s civil defence agency said that four people — two women, a man and a child — were wounded by debris from two intercepted Houthi cruise missiles in the capital and that 15 homes were damaged.