That must be the dumbest idea ever . Great work EA , congratulations,you have just ruined the best mobile city building game . City wars ,I mean really ? If I wanted war game i have about a 1000 to choose from .
i thought the idea was to build the best city you can and  keep improving it ...Wow no .,wait l have another idea...let’s go and destroy other players cities and for that heroic achievement  we will give you a reward.
Instead of all this stupendous and pointless  effort EA put into this ,we should of been given more land or island we can build on ..not DESTROY CITIES 
EA could you PLEASE remove this idiotic feature and let’s play Simcity again