Hey, folks... Does anyone know the best ways to protect your resources, cities and farms from destruction by enemy spies? Does having units on the tile make a difference? It didn't seem to but I just got the expansion for BTS and haven't played many games yet. Or is the best way just to spend points on counter-espionage missions by your spies in your enemy's territory? I didn't see many other threads on spies on this site's forums. If someone knows of any could you let me know? Thanks!