Well lets see
For starters there is the opportunity cost of using all the man power dedicated to that task instead of anything else. Then add the actual salary of the people doing it.
On top of that there is price of metal. You really think Middle East pays top dollar for scrap metal? I’m sure the local rate would be equivalent of pennies of the dollar to get out of equipment that cost $7 billion to make.
Finally there is replacement cost of all the equipment that got destroyed. I can guarantee you new equipment will be at least $7 billion worth.
So yeah, there are tax costs associated with this without a doubt.