Mozdok in the context of "Terek (river)"

The Russo-Circassian War, also known as the Russian invasion of Circassia, took place in the North Caucasus between July 1763 and June 1864. It began when the Russian Empire entered Circassia and occupied Mozdok, which prompted the Circassian people to organize a resistance movement to preserve their independence. Over the next century, the Imperial Russian Army expanded across the country until the last Circassian fighters were defeated in the Battle of Qbaada. It remains the longest war to have ever occurred in the Caucasus and in the history of Russia, as well as the longest and final war in the history of Circassia. Although it initially involved only Russia and Circassia, the conflict soon drew in a number of other Caucasian nations after they also became targets for Russian conquests, and it is consequently sometimes considered to be the western half of the Caucasian War.

During the hostilities, Russia recognized Circassia not as an independent polity, but as a Russian region that had fallen under rebel occupation—in spite of the fact that Circassia had never been controlled by Russia prior to the first incursion at Mozdok in 1763. Many Russian generals did not refer to the Circassians by their ethnonym and instead called them "mountaineers" or "bandits" in a pattern of broadly dehumanizing and xenophobic rhetoric that glorified the mass murder and rape of Circassian civilians.

The Terek is a major river in the Northern Caucasus. It originates in the Mtskheta-Mtianeti region of Georgia and flows through North Caucasus region of Russia into the Caspian Sea. It rises near the juncture of the Greater Caucasus Mountain Range and the Khokh Range, to the southwest of Mount Kazbek, winding north in a white torrent between the town of Stepantsminda and the village of Gergeti toward the Russian region North Ossetia and the city of Vladikavkaz. It turns east to flow through Chechnya and Dagestan before dividing into two branches which empty into the Caspian Sea. Below the city of Kizlyar it forms a swampy river delta around 100 kilometres (62 mi) wide. The river is a key natural asset in the region, providing irrigation and hydroelectric power in its upper reaches.

The main cities on the Terek include Vladikavkaz, Mozdok, and Kizlyar. Several minor hydroelectric power stations dam the Terek: Dzau electrostation (in Vladikavkaz), Bekanskaya, and Pavlodolskaya.

Beslan (Russian: Беслан; Ossetian: Беслӕн, Beslæn, listen) is a town and the administrative center of Pravoberezhny District of the Republic of North Ossetia–Alania, Russia, located about 29 kilometers (18 mi) north of the republic's capital Vladikavkaz, close to the border with the Republic of Ingushetia. As of the 2010 Census, its population was 36,728, making it the third largest town in the republic behind Vladikavkaz and Mozdok.

It was previously known as Tulatovo/Tulatovskoye (until 1941) and Iriston (until 1950).