This type of arrangement continued until the early 1960s when this informal status became unacceptable in light of the establishment of the United Nations and its subsidiary bodies as well as other international organizations. Steps were initiated to achieve full international recognition of the council by the host country, Denmark. At a conference convened in Copenhagen on September 7, 1964, a formal convention was signed which subsequently came into force on July 22, 1968, following its ratification by the then 17 member nations.