Kidarites in the context of "Huna people"

Tajikistan, officially the Republic of Tajikistan, is a landlocked country in Central Asia. Dushanbe is its capital and most populous city. Tajikistan borders Afghanistan to the south, Uzbekistan to the west, Kyrgyzstan to the north, and China to the east and is narrowly separated from Pakistan by Afghanistan's Wakhan Corridor. It has a population of more than 10.7 million people.

The territory was previously home to cultures of the Neolithic and the Bronze Age, including the Oxus civilisation in west, with the Indo-Iranians arriving during the Andronovo culture. Parts of country were part of the Sogdian and Bactrian civilisations, and was ruled by those including the Achaemenids, Alexander the Great, the Greco-Bactrians, the Kushans, the Kidarites and Hephthalites, the First Turkic Khaganate, the Umayyad and Abbasid Caliphates, the Samanid Empire, the Kara-Khanids, Seljuks, Khwarazmians, the Mongols, Timurids and Khanate of Bukhara. The region was later conquered by the Russian Empire, before becoming part of the Soviet Union. Within the Soviet Union, the country's borders were drawn when it was part of Uzbekistan as an autonomous republic before becoming a constituent republic of the Soviet Union on 5 December 1929.

The Hephthalites (Bactrian: ηβοδαλο, romanized: Ebodalo), sometimes called the White Huns (also known as the White Hunas, in Iranian as the Spet Xyon and in Sanskrit and Prakrit as the Sveta-huna), were a people who lived in Central Asia during the 5th to 8th centuries CE, part of the larger group of Eastern Iranian Huns. They formed an empire, the Imperial Hephthalites, and were militarily important from 450 CE, when they defeated the Kidarites, to 560 CE, when combined forces from the First Turkic Khaganate and the Sasanian Empire defeated them. After 560 CE, they established "principalities" in the area of Tokharistan, under the suzerainty of the Western Turks (in the areas north of the Oxus) and of the Sasanian Empire (in the areas south of the Oxus), before the Tokhara Yabghus took over in 625.

The Imperial Hephthalites, based in Bactria, expanded eastwards to the Tarim Basin, westwards to Sogdia and southwards through Afghanistan, but they never went beyond the Hindu-Kush, which was occupied by the Alchon Huns, previously thought to be an extension of the Hephthalites. They were a tribal confederation and included both nomadic and settled urban communities. They formed part of the four major states known collectively as Xyon (Xionites) or Huna, being preceded by the Kidarites and by the Alkhon, and succeeded by the Nezak Huns and by the First Turkic Khaganate. All of these Hunnic peoples have often been controversially linked to the Huns who invaded Eastern Europe during the same period, and/or have been referred to as "Huns", but scholars have reached no consensus about any such connection.

In the Greco-Roman world, Ariana was a geographical term referring to a general area of land between Central Asia and the Indus River. Situated far to the east in the Achaemenid Empire, it covered a number of satrapies spanning what is today the entirety of Afghanistan, the easternmost parts of Iran, and the westernmost parts of Pakistan. "Ariana" is Latinized from Greek: Ἀρ(ε)ιανή Ar(e)ianē [region]; Ἀρ(ε)ιανοί Ar(e)ianoi [demonym]. The Greek word, in turn, is derived from the term Airyanem (lit. 'Land of the Aryans') in Avestan.

During several periods of history, Ariana was governed by the Persians, such as the Achaemenids, the Kushano-Sasanians, and the Sasanians. Other significant rulers were, namely, the Greeks and the Indians, such as the Macedonians, the Seleucids, the Mauryas, the Greco-Bactrians, the Indo-Greeks, the Indo-Scythians, and the Parthians (incl. the Kushans and the Indo-Parthians). A historic presence was also established in parts of Ariana by various Huna peoples and other Central Asian nomads, such as the Xionites (incl. the Kidarites and the Hephthalites).

Peroz I (Middle Persian: 𐭯𐭩𐭫𐭥𐭰, romanized: Pērōz) was the Sasanian King of Kings (shahanshah) of Iran from 459 to 484. A son of Yazdegerd II (r. 438–457), he rejected the rule of his elder brother and incumbent king Hormizd III (r. 457–459), eventually seizing the throne after a two-year struggle. His reign was marked by war and famine. Early in his reign, he successfully quelled a rebellion in Caucasian Albania in the west, and put an end to the Kidarites in the east, briefly expanding Sasanian rule into Tokharistan, where he issued gold coins with his likeness in Balkh. At the same time Iran was suffering from a seven-year famine. He soon clashed with the former subjects of the Kidarites: the Hephthalites, who possibly would have helped him gain the throne initially. He was defeated and captured twice by the Hephthalites and as a result lost his recently acquired gains.

In 482, revolts broke out in the western provinces of Armenia and Iberia, led by Vahan Mamikonian and Vakhtang I respectively. Before Peroz could quell the unrest there, he was defeated and killed in his third war with the Hephthalites in 484, who seized the main Sasanian cities of the eastern region of Khorasan−Nishapur, Herat and Marw. Taking advantage of the weakened Sasanian position in the east, the Nezak Huns subsequently seized the region of Zabulistan. Peroz was the last shahanshah to mint unique gold coins in the Indian region of Sindh, which indicates that the region was lost around the same period. Albeit a devout Zoroastrian, Peroz supported the newly established Christian sect of Nestorianism, and just before his death, it was declared the official doctrine of the Iranian church.

Joe Cribb (born 1948) is a numismatist, specialising in Asian coinages, and in particular on coins of the Kushan Empire. His catalogues of Chinese silver currency ingots, and of ritual coins of Southeast Asia were the first detailed works on these subjects in English. With David Jongeward he published a catalogue of Kushan, Kushano-Sasanian and Kidarite Hun coins in the American Numismatic Society New York in 2015. In 2021 he was appointed Adjunct Professor of Numismatics at Hebei Normal University, China.

Buddhism in Central Asia mainly existed in Mahayana forms and was historically especially prevalent along the Silk Road. The history of Buddhism in Central Asia is closely related to the Silk Road transmission of Buddhism during the first millennium of the common era. Buddhism dominated in Pre-Islamic Central Asia. It has been argued that the spread of Indian culture and religions, especially Buddhism, as far as Sogdia, corresponded to the rule of the Kidarites over the regions from Sogdia to Gandhara.

Buddhism has now been largely replaced by Islam in modern Central Asia. Uzbekistan and Kazakhstan have the most Buddhists, largely practiced by their Koryo-saram minority, although the former has the lowest percentage of Buddhists. Due to historical Tibetan, Mongol and Manchurian influence, Kyrgyzstan has the highest percentage of Buddhists in Central Asia.