With the tetrarch system still taking shape, Diocletian and his Caesar Galerius come under growing pressure in the East, facing rebellion from Egypt and invasion from the Persian King Naresh. A series of hard campaigns, careful political choices and eventual victory will determine whether this new imperial order can truly secure Rome's frontiers.

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Episode CCLIII (253)

Part V of Diocletian

Guest: Professor Caillan Davenport (Centre for Classical Studies, Australian National University)