US vows 'economic D-Day' as Iran threatens to halt all oil exports

The US has said it will unveil new economic sanctions against Iran in “the greatest financial offensive ever marshalled,” as Iran has vowed to halt all oil exports from the Gulf. In an opinion piece published in the Financial Times,… threatened Iran with what it called "the greatest financial offensive ever marshalled" as it prepared to roll out economic sanctions on Monday ​that target Iran's trade partners.