Iran has threatened to set oil and gas infrastructure in the Middle East “on fire” if its energy sites are attacked. South Korea on Friday implemented a price cap on fuel for the first time in almost 30 years to ease cost burdens as global oil prices surge. As of midnight, the price for regular gasoline was capped at 1,724 KRW (about $1.17) per litre, diesel at 1,7... [22200 chars]