The Center for Strategic and International Studies (CSIS) estimates that during the first 100 hours of military operations in Iran, the U.S. has spent over 117 billion baht.
The Center for Strategic and International Studies (CSIS) released a report last Thursday (5 Mar 2026) indicating that in the first 100 hours of U.S. military operations in Iran, over $3.7 billion USD (about 117 billion baht) was spent, averaging $890 million per day (around 28 billion baht).
Of this amount, less than $200 million was operational costs already included in the U.S. Department of Defense budget. The remaining approximately $3.54 billion, CSIS analysts say, will likely require additional funding requests, whether via special budgets or new appropriation bills.
Beyond operational and support expenses, the main projected cost is the procurement of replacement military equipment, a major concern given the declining stockpiles of U.S. and allied missile interceptors, as well as losses such as three F-15 fighter jets shot down in a friendly fire incident in Kuwait.
CSIS noted that going forward, expenses may vary depending on “U.S. military adjustments to use less costly equipment,” as well as “the intensity of operations and Iran’s response effectiveness.”
Currently, there is no clear indication of how long the conflict with Iran will last. President Donald Trump and Defense Secretary Pete Hegseth have not set a fixed timeframe. Hegseth previously stated that military operations will continue as long as the president deems appropriate.
“You might say four weeks, but it could be six, eight, or just three weeks,” Hegseth said on Wednesday. “Ultimately, we set the pace and timing of this operation ourselves.”
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Source:CNN