ISTANBUL The US military campaign against Iran has racked up an estimated $10.35 billion in costs in just 10 days – an average of more than $1 billion per day. The figure represents roughly 1.23% of the entire 2026 US defense budget, according to estimates and data compiled by Anadolu. US forces spent an estimated $779 million in the first 24 hours alone as the operation began, Anadolu estimates. As the campaign has expanded, operational spending has climbed into the billions, based on