The converted spy, as they provide the keys to the enemy's internal workings. š§ Modern Applications
A wise general must adapt to shifting circumstances and recognize when standard rules do not apply. The Complete Art of War
Ground which can be freely traversed by both sides. The converted spy, as they provide the keys
You control your own vulnerability.
1) Break the enemy's alliances, 2) Attack their army, 3) Attack their cities (worst option). The converted spy