Oil prices rose on Wednesday after an attack on a refinery in Saudi Arabia, the world’s biggest crude exporter, renewed concerns around the risks to supply in the Middle East stemming from the conflict with Iran and its proxies. Brent crude futures rose $1.48, or 1.3%, to $115.36 a barrel as of 0140 GMT. US West Texas Intermediate crude rose $1.22 or 1.22% to $101.12. Yemen’s Houthis