Saudi energy minister says attacks testing infrastructure, vows 'serious' response

Saudi energy minister says attacks testing infrastructure, vows 'serious' response Saudi Arabia's energy minister acknowledged on Monday that the kingdom's infrastructure and resilience had been tested, as he vowed a firm response following a wave of deadly attacks by Yemen's Houthis. The Houthi attacks over the weekend marked a sharp escalation in the Yemen war. On Sunday, a strike hit Riyadh's international airport, killing one person, just hours after another Houthi-claimed attack on the site killed 13 people and left hundreds of others wounded, forcing authorities to suspend operations…