Egyptian general Scopas at Mount Panium near the sources of the Jordan, not only gave him complete possession of that region as far as the frontier of Egypt proper, but so alarmed the Egyptian guardians of the young king that, to prevent Antiochus from invading Egypt, they submitted to a peace and sealed it by the betrothal of their ward to Cleopatra the daughter of Antiochus.  When he had thus achieved his first object, he proceeded in the following year, that of the battle of Cynoscephalae, with a strong fleet of 100 decked and 100 open vessels to Asia Minor, to take possession of the districts that formerly belonged to Egypt on the south and west coasts of Asia Minor—­probably the Egyptian government had ceded these districts, which were -de facto- in the hands of Philip, to Antiochus under the peace, and had renounced all their foreign possessions in his favour—­and to recover the Greeks of Asia Minor generally for his empire.  At the same time a strong Syrian land-army assembled in Sardes.

Difficulties with Rome

This enterprise had an indirect bearing on the Romans who from the first had laid it down as a condition for Philip that he should withdraw his garrisons from Asia Minor and should leave to the Rhodians and Pergamenes their territory and to the free cities their former constitution unimpaired, and who had now to look on while Antiochus took possession of them in Philip’s place.  Attalus and the Rhodians found themselves now directly threatened by Antiochus with precisely the same danger as had driven them a few years before into the war with Philip; and they naturally sought to involve the Romans in this war as well as in that which had just terminated.  Already in 555-6 Attalus had requested from the Romans military aid against Antiochus, who had occupied his territory while the troops of Attalus were employed in the Roman war.  The more energetic Rhodians even declared to king Antiochus, when in the spring of 557 his fleet appeared off the coast of Asia Minor, that they would regard its passing beyond the Chelidonian islands (off the Lycian coast) as a declaration of war; and, when Antiochus did not regard the threat, they, emboldened by the accounts that had just arrived of the battle at Cynoscephalae, had immediately begun the war and had actually protected from the king the most important of the Carian cities, Caunus, Halicarnassus, and Myndus, and the island of Samos.  Most of the half-free cities had submitted to Antiochus, but some of them, more especially the important cities of Smyrna, Alexandria Troas, and Lampsacus, had, on learning the discomfiture of Philip, likewise taken courage to resist the Syrian; and their urgent entreaties were combined with those of the Rhodians.