Abstract: In the 250s and 240s continental Greece found itself in a particularly complicated situation. The growth of the Aetolian and Achaean Leagues, as well as Sparta's awoken ambitions, presented the Ptolemies with favorable conditions to actively pursue efforts to weaken the Macedonian influence there. Initially, the partner of the Ptolemies became the Achaean League. In this way, the Ptolemaic fleet gained important footholds, including both Corinthian ports, Kenchreai in the Saronic Gulf and Lechaion in the Corinthian Gulf. This strengthened the position of the Lagids at sea, and it was the islands on the Aegean Sea and the coasts of Asia Minor that were in the centre of the Ptolemies’ interest. However, the Aetolian League could continue to be seen as one of their possible partners in Greek politics. We should not exaggerate the Achaean-Aetolian conflict. After the death of Antigonus Gonatas in 239, the two conflicted federations were joined by an alliance. It cannot be excluded that Sparta also cooperated with the coalition, and the king of Egypt could have been a convenient link in this cooperation. There is no information whatsoever to suggest an Egyptian initiative to form the coalition. After the defeat of the Egyptian fleet at Andros in ca. 245, the position of the Lagids in the Aegean Sea was not as strong as it had once been. This was all the more reason for Ptolemies to closely observe the Aetolians’ intense activity on the Aegean Sea.