Global oil prices surged the most on record after a strike on a Saudi Arabian oil facility removed about 5% of global supplies, an attack the US has blamed on Iran. In an extraordinary start to trading, Brent futures jumped almost $12 a barrel in the seconds after the open on Monday, the biggest intraday advance in dollar terms since they were launched in 1988. State energy producer Saudi Aramco lost about 5.7 million barrels per day of output on Saturday after 10 unmanned aerial vehicles struck the world’s biggest crude-processing facility in Ab-qaiq and the kingdom’s second-biggest oil field in Khurais.