Secret “weapon” against Emperor Trajan
Cassius Dio has left a message that King Abgarus, who ruled in the small country of Osroene on the Euphrates, tried at all costs to remain neutral during the invasion of Trajan’s Roman troops on the Parthia. In order not to offend any of the parties and in the future not to worry about the fate of the kingdom, he decided to use his secret “weapon”.