Costs of US-Iran war revealed as President Trump prepares to expand naval blockade

The United States is preparing to expand a naval blockade of Iran’s ports, as it ramps up economic pressure to force Tehran back to nuclear negotiations. US President Donald Trump says the strategy is working, but Iran has condemned the move as an act of war and signalled it will respond. Despite claims of military success, divisions are growing in Congress over the cost, strategy and long-term consequences of the war.