This week will see the Iran war reach 40 days of fighting, which is a far cry from the mere "four days" some US administration officials offered as a possible 'optimistic' timeline at the very opening of Trump's Operation Epic Fury.

According to the Iran War Cost Tracker portal, the US military operation has cost more than $42 billion thus far. The tracker has arrived at this figure largely based on a Pentagon briefing to Congress on March 10, which disclosed that Washington spent $11.3 billion in the first six days of the new war in the Middle East.

The same briefing indicated the Pentagon planned to spend at least an additional $1 billion per day for the remainder of the conflict.