Cost of U.S. Campaign Against the Islamic State Likely Closing in on $1 Billion
The United States has likely spent between $780 million and $930 million in its military campaign against the Islamic State militant group so far, and it will likely cost between $200 million and $320 million per month going forward if conducted with about 2,000 U.S. service members on the ground, according to a new report published Monday.

