Treaty of Moscow
Another autonomous republic was established in July 1920 in Nakhchivan, an area bordering Armenia, Turkey and Iran, which was claimed by Armenians and Azerbaijanis. After the occupation of the region by the Red Army, the Nakhchivan Autonomous Soviet Socialist Republic was declared with "close ties" to the Azerbaijani SSR. The Treaty of Moscow and the Treaty of Kars established the Nakhchivan region as an autonomous republic under the protection of the Soviet Republic of Azerbaijan.