Hannibal could not go to Ptolemaic Egypt or Antigonid Macedon. That left the Seleucids. But their preference for Greco-Macedonian employees meant Hannibal would never be fully accepted: Antiochus listened to Hannibal’s advice without taking it wholeheartedly. Hannibal’s Tyrian agent Ariston, sent to Carthage in Antiochus’ interest, failed. A Roman mission to Antiochus tried to turn him against Hannibal, who reassured Antiochus by recalling his childhood oath. Rome’s decision for war is explained: cooperation in Greece between Antiochus and the Aetolians, disaffected Roman allies. Hannibal’s role, and court intrigues against him, are traced. Antiochus lost on land at Thermopylae (Greece); his fleet under Hannibal was no match for Rome’s experienced allies the Rhodians. The Romans won at Magnesia, commanded by Lucius Scipio with Publius as adviser. Publius as Salian priest was delayed, then missed the battle through illness. He too gave Antiochus (cryptic) advice. Hannibal and Scipio are compared as advisers.