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
Preliminaries of Peace
It was completely in the power of the Romans to dictate peace; they used their power without abusing it. The empire of Alexander might be annihilated; at a conference of the allies this desire was expressly put forward by the Aetolians. But what else would this mean, than to demolish the rampart protecting Greek culture from the Thracians and Celts? Already during the war just ended the flourishing Lysimachia on the Thracian Chersonese had been totally destroyed by the Thracians--a serious warning for the future.
Flamininus, who had clearly perceived the bitter animosities subsisting among the Greek states, could never consent that the great Roman power should be the executioner for the grudges of the Aetolian confederacy, even if his Greek sympathies had not been as much won by the polished and chivalrous king as his Roman national feeling was offended by the boastings of the Aetolians, the "victors of Cynoscephalae," as they called themselves.
He replied to the Aetolians that it was not the custom of Rome to annihilate the vanquished, and that, besides, they were their own masters and were at liberty to put an end to Macedonia, if they could. The king was treated with all possible deference, and, on his declaring himself ready now to entertain the demands formerly made, an armistice for a considerable term was agreed to by Flamininus in return for the payment of a sum of money and the furnishing of hostages, among whom was the king's son Demetrius,--an armistice which Philip greatly needed in order to expel the Dardani out of Macedonia.
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Reference address : https://www.ellopos.net/elpenor/rome/3-08-second-macedonian-war.asp?pg=60