Iran warned the United States on Thursday that its naval blockade was doomed to fail, after President Donald Trump signalled it could be enforced for months to come, in a confrontation wreaking havoc on global energy markets. Oil prices soared to a four-year high, with Brent crude for June delivery up 7.1 percent to more than $126 dollars a barrel, and Iran's President Masoud Pezeshkian responded with a warning that the action would only further destabilise the region.
