DUBAI — Even as Iran projects resilience in the war with the United States, its leaders are worried that a threat of more economic punishment by Donald Trump could increase hardships, reignite unrest and further erode the Islamic Republic’s legitimacy. The U.S. president vowed on Friday to hit Iran hard economically, a day after Treasury Secretary Scott Bessent said Washington would impose measures on Tehran that have "never been seen" as early as next week. Washington has not said what those measures will entail. For all the bravado of Iran's leaders after holding out in nearly six months of conflict and effectively closing the Strait of Hormuz, a vital global oil supply route, they face mounting pressure at home that could result in nationwide unrest, according to three Iranian officials. The officials, two political insiders, a former Iranian official and a dozen ordinary Iranians spoke to Reuters for this story on condition of anonymity, either for fear of retribution or because they are not authorised to speak to media. Iran entered the war with high inflation, a weakening curre