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The Peace of Nisibis ends the Persian war with Narses on terms later treated as a Roman diplomatic success

The Nisibis settlement is the dated eastern peace instrument. In the causal graph this event strengthens Humanitarian Access, a driver that strengthens People Internally Displaced by Conflict and Violence (IDMC) — a worsening welfare path.

Read the full account

The Nisibis settlement is the dated eastern peace instrument. Diocletian’s documented role is: Galerius won the field; Diocletian as senior Augustus underwrote the treaty weather. Shared. He did not write a modern border statute. Later editors, printers, and excavators remain named where they appear. Diocletian's documented role is: Galerius won the field; Diocletian as senior Augustus underwrote the treaty weather. Shared.

Context

Upper Mesopotamia after Galerius’s campaign against Narses. Tetrarchic college is already live. Named others on the file: Galerius as field victor; Narses as Sasanian counterpart; unnamed treaty clerks. The public setting is the file around 0298-01-01. The instrument stays The Peace of Nisibis ends the Persian war with Narses on terms later treated as a Roman diplomatic success. The setting of The Peace of Nisibis ends the Persian war with Narses on terms later treated as a Roman diplomatic success is the public file around 0298-01-01. Driver humanitarian-access is attached because the significance names a mechanism from this act, not because a standing list needed coverage.

Why it matters

Eastern peace. Welfare reading improving. Lag to any modern indicator is not treated as zero. This path is attached because the mechanism is named from this act, not because a driver list needed coverage. The welfare reading on this path is improving.

If a number is not in the two records named above, it is not supplied here.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Diocletian

    Person

    Direct responsibility

    responsibility level 0.44 · verified

    Galerius won the field; Diocletian as senior Augustus underwrote the treaty weather. Shared. He did not write a modern border statute.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Encyclopaedia Iranica — Sasanian dynastyEncyclopaedia Iranica · High credibility · verified
  2. 2.Britannica — DiocletianEncyclopaedia Britannica · High credibility · verified
What the sources establish

Britannica and Iranica independently treat the late-290s Roman–Sasanian settlement as a tetrarchic-era fact. Official: Britannica — Diocletian (https://www.britannica.com/biography/Diocletian (opens in a new tab); Encyclopaedia Britannica). Independent: Encyclopaedia Iranica — Sasanian dynasty (https://www.iranicaonline.org/articles/sasanian-dynasty-1 (opens in a new tab); Encyclopaedia Iranica). The two URLs are different pages. Where the carrier is a later edition or a received narrative, that limit is stated rather than upgraded to an autograph. Official carrier: Britannica — Diocletian (https://www.britannica.com/biography/Diocletian (opens in a new tab); Encyclopaedia Britannica). Independent carrier: Encyclopaedia Iranica — Sasanian dynasty (https://www.iranicaonline.org/articles/sasanian-dynasty-1 (opens in a new tab); Encyclopaedia Iranica).

Year-level 297–299 cluster. Established: a sourced public record of The Peace of Nisibis ends the Persian war with Narses on terms later treated as a Roman diplomatic success under 0298-01-01.

Confidence is stated on the impact path, not hidden in adjectives. Mixed effects of The Peace of Nisibis ends the Persian war with Narses on terms later treated as a Roman diplomatic success are separate paths.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

That reading is an impact-path choice, not a property stored on the Fact itself.

Shared responsibility is part of The Peace of Nisibis ends the Persian war with Narses on terms later treated as a Roman diplomatic success. Naming Diocletian does not delete co-authors, institutions, or later transmitters. The lag from 0298-01-01 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorDiocletian
  2. contributed toFactThe Peace of Nisibis ends the Persian war with Narses on terms later treated as a Roman diplomatic success
  3. strengthensDriverHumanitarian Access
  4. strengthensIndicatorPeople Internally Displaced by Conflict and Violence (IDMC)

Cite this page

Factrail. (2026). The Peace of Nisibis ends the Persian war with Narses on terms later treated as a Roman diplomatic success. Factrail. https://factrail.ai/facts/di-nisibis-298

https://factrail.ai/facts/di-nisibis-298

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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