The financial cost is just one measure of the impact of the Iran war, which also is affecting oil prices and the stock market and has led to deaths and injuries of American troops.

US military spending on the Iran war has surged to $43.6 billion, with munitions accounting for more than half the cost. The US and Nato are also facing a “beyond critical” shortage of missile interceptors.

The financial cost is just one measure of the impact of the Iran war, which also is affecting oil prices and the stock market and has led to deaths and injuries of American troops.