Subscribers: The Daily Pulse won’t be published on May 1 because of China’s Labour Day holiday. We will resume publication on Monday, May 4. Crude oil prices jumped to a four-year high after US President Donald Trump suggested that a US naval blockade of the Strait of Hormuz could last for “months”. Brent crude, the global benchmark, surged as much as 7.3 per cent, surpassing US$126 a barrel, following reports that Trump met oil executives on Tuesday to discuss ways of extending the blockade and...