State continuity of the Baltic states 1941–1944, Estonia remained occupied by the Soviet Union until its restoration of independence in 1991. Accordingly, Estonia as a state was temporarily prevented from fulfilling its international commitments. The court's rulings appear favorable to several aspects, which are important with regard to restoration of the Baltic states including the legal continuity doctrine. The rulings confirmed that the USSR committed crimes in the illegally occupied Baltic states such as Soviet deportations from Estonia and, in case Tatjana Ždanoka vs Latvia, drew parallels between legal treatment of the German Waffen SS and hardline elements of the Communist Party of the Soviet Union.
Currency mostly paper, but Australia's Commonwealth Scientific and Industrial Research Organisation developed the world's first polymer currency in the 1980s that went into circulation on the nation's bicentenary in 1988. Now used in some 22 countries (over 40 if counting commemorative issues), polymer currency dramatically improves the life span of banknotes and prevents counterfeiting. Currency use is based on the concept of lex monetae; that a sovereign state decides which currency it shall use. Currently, the International Organization for Standardization has introduced a three-letter system of codes (ISO 4217) to define currency (as opposed to simple names or currency signs), in