The Imperial Realms of Oceania, (I.R.O) also called Imperium Oceania, was an Imperial Realms of America-affiliated insurgent group and unrecognized white ethnostate that existed between 2014 and 2026, and attempted to conquer Australia and the Pacific islands. The Imperial Realms of Oceania was the least powerful member of the Imperium and the first to be totally defeated.

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