DUBAI, United Arab Emirates—Yemen’s Iran-backed Houthi rebels launched drone attacks on the world’s largest oil processing facility in Saudi Arabia and a major oil field on Sept. 14, sparking huge fires and halting about half of the supplies from the world’s largest exporter of oil.
The attacks were the latest of many drone assaults on the kingdom’s oil infrastructure in recent weeks and the most damaging. They raise concerns about global oil supply and will likely further increase tensions in the Persian Gulf that has already been challenged by recent destabilizing actions.