Game mechanics. Crowd
Player's city population may count several thousands people including all – workers and soldiers,in the meantime the army you're fighting against may be represented by tens of thousands of units. Legions of enemies, occupying all the space from your walls to the horizon is a real situation for «Diplomacy is Not an Option».
More info: https://medium.com/@eizenhorn91/diplomacy-is-not-an-option-a0ecc8aac69
