The countries with large areas and 8+ cities have some problems .
USA : If Mexico attacks on day 1 , you cannot protect yourself very early . Mexican troops attack from Reynosa and get inside your territory . You can either attack Mexico from New Orleans via land or sea and that will give him opportunity to get the city as well . So I suggest adding Houston so that Mexico to keep Mexico in check . Maybe San Francisco can be removed as there are already 2 cities on the west coast .
Russia : Russia is extremely big and there are only 2 cities in the whole eastern region . So maybe a third one (Khabarovsk) can be added . Voronezh can be removed .
India : India has just two port cities . Can 1 more be added ? And that can be Chennai . For removal , Jaipur can be removed .
China : Maybe removing Zhengzhou and adding Xining or Chengdu help ?
USA : If Mexico attacks on day 1 , you cannot protect yourself very early . Mexican troops attack from Reynosa and get inside your territory . You can either attack Mexico from New Orleans via land or sea and that will give him opportunity to get the city as well . So I suggest adding Houston so that Mexico to keep Mexico in check . Maybe San Francisco can be removed as there are already 2 cities on the west coast .
Russia : Russia is extremely big and there are only 2 cities in the whole eastern region . So maybe a third one (Khabarovsk) can be added . Voronezh can be removed .
India : India has just two port cities . Can 1 more be added ? And that can be Chennai . For removal , Jaipur can be removed .
China : Maybe removing Zhengzhou and adding Xining or Chengdu help ?