[Routing] No tags like "country" and "city" in planet.osm for ways?

[Max Power]

I've looked in some data of the planet.osm file and i'm wondering, why there are no tags like "country=" and "city=" for ways. So you can't make a useful routing, because you want to search for example the route from one road in Paris to one road in Berlin. You don't want to click somewhere in the map to mark it as start or end point. Is it planned to integrate such tags? Or is there anywhere a relation like country->city->road in planet.osm? Can i find cities in the data?

Regards,
Herodot

 		
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