If they go hungry, then they'll die

The Emperor issues a secret order to his internal administrations: 

Winter is finally starting to make itself felt here in the Habsburg Monarchy, and being at both the base of the mighty Alps and Carpathian mountain ranges, the Monarchy tends to suffer greatly from harsh periods of freezing cold, and blankets of heavy snow 

- All food supplies to the Transylvanian region are to be cut at once. Not a single grain of wheat or barley, or a single slice of animal fat, or loaf of bread is to be sold to the region. All internal trade with the Transylvanian region is suspended. 

With the borders closed to eastern food imports as well, they are to surely starve