Historically, what has been good for Chile (Argentina's neighbor) has been a disaster for Argentina, and this works the other way around.
Things that have been good for Argentina have generally been disastrous for Chile. 
mnli hypothesis: Things that have been good for Argentina have generally been disastrous for Chile.  premise: Historically, what has been good for Chile (Argentina's neighbor) has been a disaster for Argentina, and this works the other way around.