The US Defense Department's inspector general revealed Monday that the United States is facing a shortfall in ammunition as a result of its costly war in Iran.

Axar.az reports, citing CBS, in a first-of-its-kind mandatory report to Congress, the inspector said that between February 28 and June 30, Operation Epic Fury (OEF) had an estimated cost of $33.4 billion, with $22.3 billion of that spent on expended munitions alone.

The report noted "the munitions expenditure on OEF has resulted in strategic inventory shortfalls and revealed industrial base bottlenecks for munitions resupply."

It also lists losses of American assets, including four F-15s destroyed, one F-35 damaged, seven KC-135 tanker aircraft damaged and up to 30 MQ-9 Reaper drones destroyed.