As Ignoramus said, Messana was not part of Carthaginian Sicily, so they invaded it.

As for me,


Demetrius I of Macedon rode his steed up and down the ranks of the Macedonian Phalanx, escorted by his bodyguard and the Companions. He was going to lead this campaign, and he was going to win. Athens was his first target, then the Peloponesse. Than he will rebuild Megos Alexandros's Macedon.