Editing 298 (section)

==== Roman Empire ====
* Spring: Emperor [[Diocletian]] retakes [[Alexandria]] and crushes the usurpation of [[Aurelius Achilleus]]. 
* Diocletian then travels into Upper Egypt and possibly campaigns on the Nubian frontier. In either this year or in 300/301, he makes agreements with the [[Kingdom of Kush|Meroitic Nubians]] and the [[Blemmyes]]. He agrees to pay subsidies to both peoples, and he cedes the Dodecashoenos to the Nubians on the understanding that the Nubians will defend the region against the Blemmyes.
* Caesar [[Galerius]] restores [[Tiridates III of Armenia|Tiridates III]] to the throne of [[Armenia]] and invades the [[Sassanid Empire]]. His army marches through [[Adiabene]], [[Atropatene]], [[Susiana]] and Lower [[Mesopotamia]]. He then retakes the strategically important city of [[Nisibis]] in Upper Mesopotamia.