https://en.wikipedia.org/wiki/UEFA_Nations_League
Based on what I'm reading, teams will treat these like friendlies. This strikes me as very weird.
Nothing a pro soccer player hates more than meaningless games on the schedule. And this seems to clutter the schedule even more.
All I want to to know is whether these teams will be taking these games seriously. There is a championship to be awarded in June 2019. But does it mean anything?