The upheaval of the first half of the century left its mark on Macedonia even after 1949. The Yugoslav policy of building a "Macedonian" nation, Skopje' s propaganda and the continuing dispute between Yugoslavia and Bulgaria over the Yugoslav south, created uncertainty and affected Greek-Macedonia too.
Propaganda postcard published in Skopje
In this context, Greece had to make those choices which would guarantee its territorial integrity and help consolidate stability in the region, particularly after the Turkish invasion of Cyprus in 1974 and Ankara's claims on the Aegean Sea.
Moreover, security in the Balkans was essential for the creation of the necessary climate for the development of Greek-Macedonia's economy. Indicative of Greek policy was the promotion of inter-Balkan co-operation, on the initiative of Karamanlis in 1975, which was espoused by A. Papandreou in the following decade.