Stalin's native Caucasus posed a particular problem because of its highly multi-ethnic mix. Stalin opposed the idea of separate Georgian, Armenian, and Azerbaijani autonomous republics, arguing that these would likely oppress ethnic minorities within their respective territories; instead he called for a Transcaucasian Socialist Federative Soviet Republic. The Georgian Communist Party opposed the idea, resulting in the Georgian affair. In mid-1921, Stalin returned to the southern Caucasus, there calling on Georgian Communists to avoid the chauvinistic Georgian nationalism which marginalised the Abkhazian, Ossetian, and Adjarian minorities in Georgia. On this trip, Stalin met with his son Yakov, and brought him back to Moscow; Nadezhda had given birth to another of Stalin's sons, Vasily, in March 1921.