He now, following the advice of Aratus, invaded and ravaged Ætolia itself, returned into Peloponnesus, laid waste Laconia, and, flushed with success, meditated the subjection of all Greece, and a junction with Hannibal against the Romans. Aratus in vain attempted to dissuade him from this project. He sent ambassadors to the Carthaginian general, but they were intercepted, soon after their landing in Italy: as they gave out, however, that they were going to Rome, they, in a little time, obtained their release, and made their way to Hannibal, with whom they concluded a treaty. On their return they were again intercepted, and sent with all their papers to Rome. But Philip despatched other ambassadors, and a ratification of the treaty was obtained. It was stipulated that Philip should furnish a fleet of two hundred ships, to be employed in harassing the Italian coasts; and that he should also assist Hannibal with a considerable body of land-forces. In return for this assistance, when Rome and Italy should be finally reduced, which were to remain in the possession of the Carthaginians, Hannibal was to pass into Epirus at the head of a Carthaginian army, to be employed as Philip should desire; and, having made a conquest of the whole country, to give up to him such parts of it as lay convenient for Macedon.
In consequence of this agreement, the Macedonian king entered the Ionian Gulf, with a large fleet, fell down to the coast of Epirus, took Oricum, on the coast of Epirus, a defenceless seaport, but from which there was a short passage to Italy, and laid siege to Apollonia; but surprised and defeated by the Romans, secretly retreated homeward across the mountains.
ALLIANCE WITH ROME
The Romans, humbled by the victorious arms of Hannibal, were not in a condition in which they might prosecute a war with Macedon; they therefore determined, if possible, to raise up enemies against Philip in Greece, that he might be employed at home in the defence of his own dominions. They accordingly made overtures for this purpose to the Ætolians, who, confiding in the flattering declarations of the Roman ambassador, hastened to conclude a treaty, of which the following were the principal conditions: That the Ætolians should immediately commence hostilities against Philip by land, which the Romans were to support by a fleet of twenty galleys; that whatever conquests might be made, from the confines of Ætolia to Corcyra, the cities, buildings, and territory, should belong to the Ætolians, but every other kind of plunder to the Romans. The Spartans and Eleans, with other states, were included in this alliance; and the war commenced with the reduction of the island of Zacynthus, which, as an earnest of Roman generosity and good faith, was immediately annexed to the dominions of Ætolia. These transactions were dated about 208 B.C.
[208-205 B.C.]
It has already been observed, that Philip aimed at the subjection of all Greece. Aratus, who would have opposed him in this design, he took off by poison.[51] His interest in Greece was now strengthened by the introduction of the Romans: he was regarded by the Greeks as the champion of freedom, and as their defence against the Romans, whom they still considered and denominated barbarians. Not only the Greeks northward of the Corinthian isthmus, but even the Achæan League, prepared to take up arms in his support. Encouraged by these allies, he acted with uncommon vigour: he carried the war into Illyricum with success; marched to the relief of the Acarnanians, who were threatened by the Ætolians, and fortified himself in Thessaly. The Ætolians, notwithstanding these advantages gained over them by Philip, and that they were afterwards defeated by him in two hot engagements, remained undaunted, and prosecuted the war with an amazing obstinacy. The neighbouring states, now jealous of the successes of Philip, endeavoured to mediate a peace; nor did the Macedonian show himself unwilling to treat for that purpose.