You must have not studied Sweden's history before. The Thirty Year's War, look it up. Sweden changed warfare by creating a constricted standing army.
Denmark and Russia have tried to disturb Sweden in the past. Sweden even lost of Russia when Peter the Great was ruling.
I'm not gonna delve into this because it can get political, but they definitely do have social problems.
The thing about Sweden, though, is that they constantly seem to be a step ahead in the world and then everyone seems to follow it.
All countries have problems. I just feel education should be improved in the way Sweden is doing it. I approve of America's system of government, but it's education could improve.