Post the number of cities of all your enemies combined
Example: you are fighting right now 3 wars, one nation with 8 cities, one nation with 12 cities, and one nation with 13 cities, 8+12+13=33 so you have to post 33
My 21 cities nation is busy with a total of 160 cities
Example: you are fighting right now 3 wars, one nation with 8 cities, one nation with 12 cities, and one nation with 13 cities, 8+12+13=33 so you have to post 33
My 21 cities nation is busy with a total of 160 cities