Titus Livius (Livy), The History of Rome, Book 23
Frank Gardener Moore, Professor Emeritus in Columbia University, Ed.

33. To this conflict of the two richest peoples¹ in the world all kings and nations had turned their attention, among them [2??] Philip, king of the Macedonians, all the more since he was nearer to Italy and separated from it only by the Ionian Sea. [3] On first learning by report that Hannibal had crossed the Alps, although he had rejoiced at the outbreak of war between the Romans and the Carthaginians, still, as their resources were not yet known, he had wavered, uncertain which of the two peoples he wished to have the victory. [4] Now that a third battle, a third victory, favoured the Carthaginians, he inclined to the side of success and sent ambassadors to Hannibal. These avoided the ports of Brundisium and Tarentum, because they were kept guarded by Roman ships, and landed at the Temple of Lacinian Juno.² [5] Making their way thence toward Capua by way of Apulia, they encountered the centre of the Roman forces and were brought before Valerius Laevinus, the praetor, whose camp was near Luceria. [6] There Xenophanes, the leader of the embassy, boldly said that he had been sent by King Philip to negotiate a friendly alliance with the Roman people; that he had communications for the consuls and for the senate and the Roman people. [7] The praetor, who in the midst of the revolts of old allies was greatly delighted by a new alliance with so famous a king, hospitably received enemies as guests. [8] He furnished men to escort them, to indicate the roads carefully, and what positions and what passes were held either by the Romans or by the enemy. [9] Xenophanes made his way through the Roman forces into [p. 117]Campania and thence by the shortest road to the³ camp of Hannibal, and arranged a treaty of friendship with him on the following terms: that King Philip with the largest possible fleet —and [10] it was thought that he would make it two hundred ships —should cross to Italy and ravage the coast, and should carry on the war on land and sea with all his might; [11] that after the war was over all Italy with the city of Rome itself should belong to the Carthaginians and Hannibal, and all the booty fall to Hannibal; [12] that after the complete subjugation of Italy they should sail to Greece and wage war with such enemies as the king might choose; and that such states on the mainland and such islands as face Macedonia should belong to Philip and be a part of his kingdom.