Greek hosts; they had curtailed the Syracusan territory; they had oppressed and plundered a number of smaller Greek towns.  In league with the Romans who just about this time were sending their legions against the Campanians in Rhegium, the allies, kinsmen, and confederates in crime of the Mamertines,(2) Hiero turned his arms against Messana.  By a great victory, after which Hiero was proclaimed king of the Siceliots (484), he succeeded in shutting up the Mamertines within their city, and after the siege had lasted some years, they found themselves reduced to extremity and unable to hold the city longer against Hiero on their own resources.  It is evident that a surrender on stipulated conditions was impossible, and that the axe of the executioner, which had fallen upon the Campanians of Rhegium at Rome, as certainly awaited those of Messana at Syracuse.  Their only means of safety lay in delivering up the city either to the Carthaginians or to the Romans, both of whom could not but be so strongly set upon acquiring that important place as to overlook all other scruples.  Whether it would be more advantageous to surrender it to the masters of Africa or to the masters of Italy, was doubtful; after long hesitation the majority of the Campanian burgesses at length resolved to offer the possession of their sea-commanding fortress to the Romans.

The Mammertines Received into the Italian Confederacy

It was a moment of the deepest significance in the history of the world, when the envoys of the Mamertines appeared in the Roman senate.  No one indeed could then anticipate all that was to depend on the crossing of that narrow arm of the sea; but that the decision, however it should go, would involve consequences far other and more important than had attached to any decree hitherto passed by the senate, must have been manifest to every one of the deliberating fathers of the city.  Strictly upright men might indeed ask how it was possible to deliberate at all, and how any one could even think of suggesting that the Romans should not only break their alliance with Hiero, but should, just after the Campanians of Rhegium had been punished by them with righteous severity, admit the no less guilty Sicilian accomplices to the alliance and friendship of the state, and thereby rescue them from the punishment which they deserved.  Such an outrage on propriety would not only afford their adversaries matter for declamation, but must seriously offend all men of moral feeling.  But even the statesman, with whom political morality was no mere phrase, might ask in reply, how Roman burgesses, who had broken their military oath and treacherously murdered the allies of Rome, could be placed on a level with foreigners who had committed an outrage on foreigners, where no one had constituted the Romans judges of the one or avengers of the other?  Had the question been only whether the Syracusans or Mamertines should rule in Messana, Rome might certainly have acquiesced