The cost of the US operation against Iran has exceeded $27 billion, according to the Iran War Cost Tracker.
The source calculates in real time the funds needed to maintain personnel, ships and other related costs.
The calculation methodology is based on a Pentagon report to Congress, which states that the first six days cost $11.3 billion, and each subsequent day will cost $1 billion.
According to Newsweek, the US military operation against Iran has already cost more money than the invasion of Iraq in 2003.
According to the publication, the Pentagon has requested $200 billion from Congress to continue the campaign - $67 billion more, than the George W. Bush administration requested 23 years ago.