ISTANBUL Saudi Arabia reported an attempted attack on the Ras Tanura oil refinery on the country’s eastern coast amid heightened tensions in the region. Initial assessments suggest that it was a drone attack, the Saudi Defense Ministry said on the US social media company X. No damage was reported. Regional tensions have escalated when the US and Israel launched a large-scale attack on Iran on Saturday, killing nearly 800 people, including Supreme Leader Ali Khamenei. Tehran has retaliated with