US blockade of Iran ports threatens already crippled oil supply

Iran had continued to pump crude to Asia since the start of the Middle East war, partly shielded by its elusive "dark fleet". Roughly one-fifth of the world's oil normally flows through the vital waterway. In recent weeks, Iran has already tightened the screws, sharply slowing maritime traffic and reportedly charging transit fees. Now the additional blockade of Iranian ports ordered Sunday by US President Donald Trump threatens to land another blow to global oil and gas supplies after the fighting...