Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
State of the East
The state of breathless excitement, in which the revolution kept the Roman government by perpetually renewing the alarm of fire and the cry to quench it, made them lose sight of provincial matters generally; and that most of all in the case of the Asiatic lands, whose remote and unwarlike nations did not thrust themselves so directly on the attention of the government as Africa, Spain, and its Transalpine neighbours.
After the annexation of the kingdom of Attalus, which took place contemporaneously with the outbreak of the revolution, for a whole generation there is hardly any evidence of Rome taking a serious part in Oriental affairs--with the exception of the establishment of the province of Cilicia in 652,(1) to which the Romans were driven by the boundless audacity of the Cilician pirates, and which was in reality nothing more than the institution of a permanent station for a small division of the Roman army and fleet in the eastern waters.
1. Cf. IV. VIII. Occupation of Cilicia
It was not till the downfall of Marius in 654 had in some measure consolidated the government of the restoration, that the Roman authorities began anew to bestow some attention on the events in the east
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/4-08-east-king-mithradates.asp