WASHINGTON - The US has spent more than $2.7 billion on the war against Islamic State militants in Iraq and Syria since bombings began last August, and the average daily cost is now more than $9 million, the Pentagon said Thursday.
Releasing a detailed breakdown of the costs for the first time, the Defense Department showed that the Air Force has borne two-thirds of the total spending, or more than $1.8 billion. The daily combat, reconnaissance and other flights eat up more than $5 million a day.