Newsweek: US uses THAAD system against Iranian missiles cost $800 million. Newsweek, citing military sources from Bulgarian Military News and Military Watch Magazine, reported that the United States used up about 15 to 20 percent of the global stockpile of THAAD missiles during the recent Iran-Israel conflict, at an unprecedented cost to Washington of $800 … Continue reading Newsweek: US uses THAAD system against Iranian missiles cost $800 million.