And national ridicule and vilification follows if you don't, which is the reality for almost all international managers.
The one problem with football becoming more technical and better coached at club level is that it makes it even harder to replicate at international level. Klopp could not be Klopp in an international role- his approach relies on the physical conditioning of his players to be able to cope with a certain tempo and there is no way he can manage this with players he doesn't oversee.
The best international managers are those that can get across a simple tactical approach to players quickly. Arteta, for example, has many strengths as a coach but this doesn't currently appear to be one of them. Our new recruits tend to be slightly baffled on arrival by an overload of information.