Brent crude hit US$85.40 a barrel on Tuesday morning — up 9.6% in a single day — after the US reinstated its naval blockade of Iran and launched a third wave of strikes in the Strait of Hormuz. For Singaporeans, this isn't abstract geopolitics. Every dollar rise at the wellhead creeps into your life: petrol prices, electricity tariffs, and the cost of almost everything that arrives by container ship. The Ministry of Trade and Industry confirmed Tuesday that...