On the news of the king's arrival, ambassadors from his allies came to Demetrias from all sides.

For the Aetolians, inspirited both by their alliance with the Romans and the approach of king Attalus, were ravaging the neighbouring states; not only the Acarnanians, Boeotians, and Euboeans were very much alarmed, but the Achaeans also were kept in a state of terror, both by the hostile proceedings of the Aetolians, and also by Machanidas, tyrant of Lacedaemon, who had encamped at a short distance from the borders of the Argives.

All of these stating the dangers which threatened their possessions, both by land and sea, entreated succour from the king.

Philip received accounts even from his own kingdom, that things were not in a state of tranquillity; that both Scerdilaedus and Pleuratus were in motion, and that some of the Thracians, and particularly the Maedians, would certainly make incursions on the contiguous provinces of Macedonia, should the king be occupied with a distant war.

The Boeotians, indeed, and the people inhabiting the inland parts of Greece, told him that the Aetolians had obstructed by a ditch and rampart the straits of Thermopylae, where the road is very narrow and confined, in order to prevent their passing to the assistance of the allied states.