Assurer le "sauvetage" d’une langue: les conditions nécessaires sont-elles suffisantes?

As Joshua Fishman demonstrate in <i>Reversing Language Shift</i>, saving a language would be possible working in two ways: from the half upper part of Fishman’s "Graded Intergenerational Disrupting Scale" or from its half lower part. Saving from the upper part means developing language planning from State power or self-governing power on corpus and status. Power is considered as the right and necessary place to make it work, spreading language imposing laws and rules to speaking-citizens and/or inciting them to do it. However, many examples show that imposition doesn’t work without individual and collective speaker support: linguistic consciousness and loyalty based on social and intergenerational transmission. Both analysis are right and completing each other: political national(ist) consciousness and loyalty is the right base of fighting for reaching power. So, do necessarily saving a language and nationalism go hand in hand?