 Complete the following phrase:  He escaped the Italian deadlock by answering a call for help from Syracuse, which tyrant Thoenon was desperately fighting an invasion from Carthage. Pyrrhus could not let them take the whole island as it would have compromised his ambitions in the western Mediterranean and so declared war on them. At first, his Sicilian campaign was an easy triumph; he was welcomed as a liberator in every Greek city on his way, even receiving the title of king basileus of Sicily. The Carthaginians lifted the siege of Syracuse before his arrival, but he could not entirely oust them from the island as he failed to take their fortress of Lilybaeum. His harsh rule, especially the murder of Thoenon, whom he did not trust, soon led to a widespread antipathy among the Sicilians; some cities even defected to Carthage. In 275, Pyrrhus left the island before he had to face a full-scale rebellion. He returned to Italy, where his Samnite allies were on the verge of losing the war, despite their earlier victory at the Cranita hills. Pyrrhus again met the Romans at the 