Question: Yazdegerd II fought wars against which Central Asian people based in Bactria?

Context paragraphs:
Mihr Narseh: Mihr Narseh (Middle Persian: "Mihr Narsē"), was a powerful Iranian nobleman from the House of Suren, who served as minister ("wuzurg framadār") of the Sasanian Empire during the reigns of the Sasanian kings Yazdegerd I (r. 399-420), Bahram V (420–438), Yazdegerd II (r. 438–457) and Peroz I (r. 457–484).

Somfai Kara David: Somfai Kara David (born 21 April 1969, Budapest, Hungary) is a Hungarian academic of Linguistics and Ethnography currently working in Hungarian Academy of Sciences.  He holds Doctor of Philosophy degree, and his academic discipline focuses on the cultures and languages of the Central Asian people such as Turkic and Mongolic people.  Apart from Central Asian Turkic (Kyrgyz, Kazakh etc.) and Mongolian languages he has a knowledge of English and Russian languages.  He also researched on and published several works regarding the folklore, tradition, mythology, and religion of those people.

Yazdegerd II: Yazdegerd II (Middle Persian: 𐭩𐭦𐭣𐭪𐭥𐭲𐭩 "Yazdākird", meaning "made by God"; <a href="Persian%20language">Persianزدگرد‎ ‎ ), was the sixteenth <a href="Sasanian%20Empire">Sasanian</a> emperor of <a href="Iran">Iran</a>.  He was the successor and son of Bahram V (420–438) and reigned from 438 to 457.  His name may also be spelled Yazdgard II.  His reign was marked by wars against the Byzantine Empire in the west and the Hephthalite Empire in the east, as well as by his efforts and attempts to impose Zoroastrianism on the largest religious minority within the empire, namely the Christians.

South Asian people in Ireland: South Asian people in Ireland are residents or citizens of Ireland who are of South Asian background or ancestry.  There has been an important and well-established community of people of South Asian descent in Ireland for many decades.  Non-Chinese Asian people (the category which mainly includes South Asian people) were reported to be the fastest growing ethnic group in Ireland in the 2011 census.  Some of these people self-identify as being fully Irish, while others prefer to identify with their original country of ancestry.

Central Asian Review: Central Asian Review was a journal of Central Asian Studies published from 1953 to 1968.  The journal’s full title was Central Asian Review: A Quarterly Review of Current Developments in Soviet Central Asia and Kazakhstan and was published quarterly by the Central Asian Research Centre in association with St. Antony's College, Oxford University.  Founder and director of the center, Geoffrey Wheeler was the editor-in-chief and frequent contributor to the journal.

Eran-Khwarrah-Yazdegerd: Eran-Khwarrah-Yazdegerd (meaning "Ērān, glory of Yazdegerd") was a short-lived province of the Sasanian Empire located in the northern part of the Gorgan province.  The province was founded by shah Yazdegerd II (r. 438-457).

Gamucha: Gamucha (also "gamocha" (ga=body, mocha=wipe), "gamchcha", "gamcha") is a thin, coarse, traditional cotton towel found in India, Bangladesh as well as various parts of South and Southeast Asia and is used to dry the body after bathing or wiping sweat.  Gamucha is the local term for a sweat towel.  It is often just worn on one side of the shoulder.  However its appearance varies from region to region.  Gamucha has been traditionally worn as scarf by male folks of Orissa which was mentioned in Oriya Mahabharata by Sarala Dasa.  Male villagers wear it as dhoti.  Children of tribal communities in Orissa wear gamucha until their adolescence after which they wear dhoti.  Weavers of traditional "tantubaya" or "jugi"community migrated from Bangladesh to Tripura and weavers of Orissa produce good quality gamucha.  Gamucha is most commonly found with check and striped patterns of red, orange or green.  Plain white gamchhas with coloured (embroidered or printed) borders from Orissa and Assam (for traditional Assamese Gamucha, see Gamosa) are local handicrafts, and may be worn around the neck with traditional Indian attire.  In western areas, gamucha is primarily made in red colour and are plain like cloth.  In southern India, gamucha is more coarse and are available in various dyes.  Even homemade lightweight fur towels are also popularly termed as gamchhas.  Gamucha are worn by the South Asian people, especially in the Indian states of Andhra Pradesh, Bihar, West Bengal, Jharkhand and the Purvanchal region, because they are not as thick as Western-style towels and better suited to the country's tropical, humid climate.  In Afghanistan they are also used and are commonly referred to as dismaal.  They may also be found in Central Asian, Middle Eastern and Turkish hamams as a traditional male loin cloth and towel worn during bathing and massage.

East Asian people: The East Asian people are indigenous to East Asia, which consists of Mainland China, Hong Kong, Macau, Japan, Taiwan, Mongolia, North Korea and South Korea, and for some authors, Vietnam, due to significant influence of East Asian cultural sphere on the Vietnamese culture.  Major ethnic groups of East Asia are: Han, Japanese, and Koreans.  Other ethnic groups of East Asia include: Manchus, Tibetans, Mongols, Uyghurs, Kazakh, Kyrgyz and Ryukyuan.  However, Uyghur, Kazakh and Kyrgyz peoples who live in East Asia are not considered East Asians but Central Asian and are of mixed Mongoloid and Caucasoid origin.  Indigenous people of Northeast Asia such as Buryats, Evenks, and Yakuts are geographically and racially East Asian but due to the national and political dividing lines, East Asians north of China and Mongolia are not politically East Asian.

Hephthalite Empire: The Hephthalites (or Ephthalites) were a people of Central Asia who were militarily important circa 450-560.  They were based in Bactria and expanded east to the Tarim Basin, west to Sogdia and south through Afghanistan to northern India.  They were a tribal confederation and included both nomadic and urban, settled communities.  They were part of the four major "Hunic" states known collectively as Xionites or "Hunas", being preceeded by the Kidarites, and succeeded by the Alchon Huns and lastly the Nezak Huns.  The Sveta Huna or "White Huns" who invaded northern India are probably the Ephthalites, but the exact relation is not clear.

Cinema of Central Asia: The Cinema of Central Asia refers to the cinema of the five Central Asian countries (Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan).  Central Asian cinema can further be divided into three historical periods, Soviet Central Asian film (1919–1987), a New Wave of Central Asian film (1988–1992), and the modern period of film of the independent Central Asian countries (1992–present).

Supporting paragraphs: Yazdegerd II Hephthalite Empire
Answer: Hephthalite Empire