You probably mean: spent.
As you might know, there is not even one case of a country losing money for no reason.
The cash, spending, income and all money transfers are taking place at a large scale, each day for years and nothing is lost.
there were several cases when players claimed the same before, and all of them were explained.
There are details in the cash report of the country showing the purchase of materials. in many cases, large purchases of materials to cover for negative positions that are the result of market shortages.
In your specific case, we see many orders for materials, ammunition and weapons.
There are 115 IMMEDIATE orders in these months for large amounts of money.
Please also check the logs of your supply units that are transporting materials to your military units.
These logs are very large for the recent period and include many details about large quantities of material, ammunition and upgrades moving from the country records to the units.
The value of these materials can look like lost but it is spent.