I regret using the word "normal". However I am not being a cultural imperialist. Sure, disambiguate where it makes sense. It would make sense for people in Ontario to disambiguate London often. Paris, not so much. There is absolutely no need for disambiguation in an article meant for a wide audience and featuring iconic cityscapes complete with the Eiffel tower etc! The "Paris, France" meme is endemic in North American media but completely absent in the rest of the English speaking world.