Both the GDR and the FRG considered they were the ones authorised to speak for themselves

on behalf of Germany. This led to many international and local complications, such as the

recognition of borders with the neighbours and signing of peace treaties. The mutual

recognition of the two states took place only in December 1972, when the agreement based on

relations between the GDR and FRG was signed. Less than a year later, both countries

became members of the UN.