evidence: While reporting from the South Caucasus has recently focused on Azerbaijan’s victory in the Nagorno-Karabakh conflict, it is important to recognise the renewed importance of the Nakhchivan region. This autonomous republic is quickly becoming a key part of regional politics. [...] When the Soviets arrived in the region, the "Democratic Republics" of Armenia and Azerbaijan continued to struggle for dominance in the region. In July 1920, the Red Army invaded and occupied the area. The Nakhchivan Autonomous Soviet Socialist Republic was declared, which in turn established close ties with the Azerbaijani SSR. In an attempt to gain political support, Armenia’s Bolshevik leaders promised to integrate Nakhchivan, Nagorno-Karabakh and the Zangezur region into the Armenian SSR. At one point this was supported by Lenin and the Bolshevik leaders in Baku. However, the Soviets held a referendum in 1921, in which 90 per cent of the Nakhchivan population voted to remain part of the Azerbaijani SSR. The result was confirmed by the treaty of March 16th 1921 between Turkey and Soviet Russia. From 1924, it became an autonomous republic within the Azerbaijani SSR. During the Soviet period, the region’s Azerbaijani population continued to grow steadily, while the Armenian minority decreased from 15 per cent in 1926 to 1.4 per cent in 1979.