I understand that, but as I said, I am playing Always War, the only way to get rid of enemies is by total eliminations. Right now, USA and China have been eliminated from the game.
That said, there are cities that were not mine without war weariness such as Beijing and Washington (maybe due to them being capitals?), but also Chicago and Chengdu.
For all three city states, there are varying numbers for war weariness, Zanzibar, Yerevan and Kumasi. Weird