Let me get this straight, you're siding with the enemy occupation? If not, then why would you have a problem with a sovereign nation retaking their own country.

"A stay-behind operation is one where a country places secret operatives or organizations in its own territory, for use in case of a later enemy occupation. The stay-behind operatives would then form the basis of a resistance movement, and act as spies from behind enemy lines."

They leave spies in their own territory when being invaded in order to get their country back. How dare they‽