To do this you will need to create a "Visits - Geo information measure" and add the countries ( the green plus symbol on the right) that you want to see the cities information for. You are able to see the top "X" cities by population. You specify what X will be (default is 50). Create this measure and add it as a splitting for your BT and then you are able to see split values that include Country-state-city for the countries you added in that field. If the city is not one of the top 50 (in this case) by population it just defaults to just the country without showing the state and city. See screenshots below.