Iran threatens greater force if US launches more attacks

Iran’s top negotiator on Sunday threatened a more forceful response to any further US attacks after Tehran targeted American warships in their latest round of clashes.The exchanges of fire, which began with US raids last week, come amid a deadlock in the six-month war between the two foes.Iran has maintained its stranglehold on the strategic Strait of Hormuz while Washington continues a counter-blockade of Iranian ports.Washington is also seeking to choke Iran’s economy, rolling out