Dual nationality was incompatible with
the absolute authority of the state over its
territory and its nationals (Brubaker, 1989).
Indeed, we see the development of a series
of mechanisms aimed at preventing or
counteracting the occurrence of de facto dual
nationality, such as the redrawing of borders
after wars or the imposition of a new nationstate
on an underlying older one (Marrus,
1985). There were no international accords
on dual nationality, a sharp contrast with the
1990s, which have seen a proliferation of
such accords. This negative perception of
dual nationality continued into the first half
of the twentieth century and well into the
1960s. The main effort by the international
system was to root out the causes of dual
nationality by means of multilateral codification
of the law on the subject (Rubenstein,
and Adler, 2000).