The East Roman–Sassanid War of 440 was a short conflict between the

East Roman Empire The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantin ...

and the

Sasanian Empire The Sasanian () or Sassanid Empire, officially known as the Empire of Iranians (, ) and also referred to by historians as the Neo-Persian Empire, was the last Iranian empire before the early Muslim conquests of the 7th-8th centuries AD. Named ...

. The reason for its short ending was that the southern Roman provinces were being invaded by the

Vandals The Vandals were a Germanic peoples, Germanic people who first inhabited what is now southern Poland. They established Vandal Kingdom, Vandal kingdoms on the Iberian Peninsula, Mediterranean islands, and North Africa in the fifth century. The ...

, which forced the East Romans to sue for a quick end to the war to focus on the Vandal invasion. The Sasanians were also paid some gold tribute in return for peace.

History

The

Sasanian The Sasanian () or Sassanid Empire, officially known as the Empire of Iranians (, ) and also referred to by historians as the Neo-Persian Empire, was the last Iranian empire before the early Muslim conquests of the 7th-8th centuries AD. Named ...

and the

Roman Empire The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post-Roman Republic, Republican period of ancient Rome. As a polity, it included large territorial holdings aro ...

had since their peace treaty in 387 agreed that they both were obligated to cooperate in the defense of the

Caucasus The Caucasus () or Caucasia (), is a region between the Black Sea and the Caspian Sea, mainly comprising Armenia, Azerbaijan, Georgia, and parts of Southern Russia. The Caucasus Mountains, including the Greater Caucasus range, have historica ...

against nomadic attacks. The Romans helped in the defense of the Caucasus by paying the Iranians roughly 500 lbs (226 kg) of gold at irregular intervals. While the Romans saw this payment as political subsidies, the Iranians saw it as tribute, which proved that Rome was the deputy of Iran. The Roman emperor

Theodosius II Theodosius II ( grc-gre, Θεοδόσιος, Theodosios; 10 April 401 – 28 July 450) was Roman emperor for most of his life, proclaimed ''augustus'' as an infant in 402 and ruling as the eastern Empire's sole emperor after the death of his ...

's unwillingness to continue the payment made

shah Shah (; fa, شاه, , ) is a royal title that was historically used by the leading figures of Iranian monarchies.Yarshater, EhsaPersia or Iran, Persian or Farsi, ''Iranian Studies'', vol. XXII no. 1 (1989) It was also used by a variety of ...

Yazdegerd II Yazdegerd II (also spelled Yazdgerd and Yazdgird; pal, 𐭩𐭦𐭣𐭪𐭥𐭲𐭩), was the Sasanian King of Kings () of Iran from 438 to 457. He was the successor and son of Bahram V (). His reign was marked by wars against the Eastern Roma ...

declare war against the Romans, which had ultimately little success for either side. The Romans were invaded in their southern provinces by the

, causing Theodosius II to ask for peace and send his commander, Anatolius, personally to Yazdegerd II's camp. In the ensuing negotiations in 440, both empires promised not to build any new fortifications in

Mesopotamia Mesopotamia ''Mesopotamíā''; ar, بِلَاد ٱلرَّافِدَيْن or ; syc, ܐܪܡ ܢܗܪ̈ܝܢ, or , ) is a historical region of Western Asia situated within the Tigris–Euphrates river system, in the northern part of the ...

and that the Sasanian Empire would get some payment in order to protect the Caucasus from incursions.

References

Sources

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440 Year 440 (CDXL) was a leap year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Valentinianus and Anatolius (or, less frequently, year 1193 ''Ab urbe ...

440 440s conflicts 5th century in the Byzantine Empire 5th century 440s in the Byzantine Empire 5th century in Iran {{mil-hist-stub