"Better the pride that resides in a citizen of the world
Than the pride that divides when a colorful rag is unfurled"
"Citizen of the world" is more of a spiritual sense than an actual one.
People are citizens of nations - except for unfortunate refugees in many parts of the world.
This concept of "citizens of the world" gets lots of discussion. Ronald Reagan, a conservative, promoted it, whereas many liberal political scientists remind us that citizens are tied to nations.
This danger of renouncing nation and being a "citizen of the world" was borne out in the old Steve McQueen movie, "The Sand Pebbles." The story was based on the real Panay incident in 1937. During a Chinese uprising against Western government outposts and their merchants, some idealistic Western missionairies declare them citizens of the world. These internationalists lose the protection of the US Navy forces, and end up being killed by a Chinese militia as "foreign devils."
I would suggest we can improve the world by striving to be "spiritual citizens" willing to positively engage people of other nations. World government, however, isn't likely to come about, no do I see it as desirable. Just look at the botch jobs at the United Nations, and the World Bank.
If I'm looking at a sport where "my" country is not doing as well as others, or has fallen, I'm asking:
What are they doing "right" and what can we learn from them?
Does that sport fit my country or a niche?
Has our culture changed so much that we have fallen in this sport, or are we doing such a fine job of marketing that sport to other countries they they are catching us?
As to the jingoistic v citizen of the world attitude, it's a balance. Doesn't have to be balanced evenly, but extremes typically lead to poor results in the long run.
i think the only bad result could come from the jingoistic extreme. i could be wrong tho, i dont always see both sides of the coin.