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There’s a lot of literature on the work of Soviet partisans. Some survival guides from three letter agencies of different countries were leaked. I’d “arm” myself with those (and actually arm myself with real guns if I will have access to them) and move to the forest. Forests and mountains are an excellent terrain type to go into hiding with both cover and natural resources to keep you going
It depends. In some cases it is better to keep your head cool to make more weighed decisions