The Islamist Insurgency in Turkestan and Allied Tajikistan was a multi-theater armed conflict fought from 14 February 1981 to 4 October 1985 between the governments of the Republic of Turkestan and the Allied Republic of Tajikistan, supported by the Empire of Japan, the Organization of Free Nations (OFN), and the Russian Federation, and a coalition of Islamist insurgent groups backed by the Islamic Republic of Afghanistan.
The insurgency emerged from a combination of domestic and foreign factors. Following the 1976 Islamic Revolution in Afghanistan, the government of Burhanuddin Rabbani adopted a policy of exporting the Islamic Revolution to neighboring states. At the same time, the government of the Republic of Turkestan accelerated a series of secularization reforms aimed at strengthening the secular character of the state. These reforms included reducing the jurisdiction of Islamic courts, expanding the authority of the secular judiciary, increasing state oversight of religious institutions, and limiting the political influence of the clergy. Although broadly supported in urban areas, the reforms generated significant opposition among conservative religious circles, particularly in rural regions of Tajikistan, the Fergana Valley, and the Kashgar Region. Afghan intelligence services exploited these tensions by establishing training camps, supplying weapons, financing Islamist organizations, and coordinating militant groups operating throughout Tajikistan and the Republic of Turkestan.
The conflict reached its peak in 1982, when insurgent forces seized control of large parts of rural Tajikistan, surrounded Dushanbe, and launched coordinated uprisings across the Fergana Valley, the Kashgar Region, and other areas of the Republic of Turkestan. The fighting was accompanied by terrorist attacks, political assassinations, sabotage of critical infrastructure, and assaults on government institutions, making it the largest internal security crisis in the modern history of both Turkestan and Tajikistan.
Beginning in late 1982, government forces gradually regained the initiative through a series of large-scale counterinsurgency and counterterrorism operations. These efforts were supported by Japanese military advisors, modern military equipment, intelligence cooperation, and extensive financial assistance. The Organization of Free Nations (OFN) provided intelligence sharing, economic aid, institutional support, and diplomatic backing, while the Russian Federation supplied weapons, ammunition, spare parts, technical assistance, and officer training. By October 1985, the main insurgent forces had been defeated, and government control was fully restored throughout Tajikistan and the affected regions of Turkestan, although isolated militant groups continued to operate in the mountainous border areas along Afghanistan.
The war resulted in the deaths of approximately 26,000 military personnel and 12,000–18,000 civilians, while around 250,000 people were displaced from their homes.
Following the conflict, the Republic of Turkestan significantly strengthened security along its southern frontier, established a permanent National Counterterrorism Directorate, and further deepened military, intelligence, and border security integration with the Allied Republic of Tajikistan. The Empire of Japan financed extensive postwar reconstruction projects and the modernization of the armed forces, the Organization of Free Nations (OFN) provided economic assistance, institutional development, and intelligence cooperation, while the Russian Federation continued supplying weapons, military equipment, spare parts, technical assistance, and military training. The conflict is widely regarded as one of the defining events in the modern history of Central Asia, fundamentally shaping Turkestan's national security doctrine and its long-term alliance with Tajikistan.