Roman diplomats employed a strategy of bad-faith negotiation to cripple Carthage's defenses. They first demanded the surrender of all weapons, implying this would suffice. Only after Carthage was completely disarmed did the Romans reveal their true, non-negotiable demand: the city's total destruction.

A Roman faction opposed Cato's call for annihilation, not out of mercy, but from a strategic belief that Rome needed a rival. They argued that the fear of Carthage kept Romans disciplined and on their toes, and that total victory would lead to internal decadence and self-indulgence.

After Cannae, Rome desperately needed manpower, yet the Senate refused Hannibal's offer to ransom its captured soldiers. This seemingly counterintuitive decision was a powerful psychological statement to Hannibal, their allies, and their own people: there would be no negotiation, only total war, regardless of the human cost.

The Romans often propagandized the concept of 'Punica Fides' or 'Punic Faith' to portray Carthaginians as uniquely treacherous. Yet, their greatest general, Scipio, used blatant deception by feigning peace negotiations with Sifax and Hasdrubal specifically to learn the layout of their camps before burning them down, highlighting the hypocrisy of wartime rhetoric.

The Romans empowered Massinissa, a Numidian king and their ally, to continuously encroach on Carthaginian territory. This strategy of using a proxy ally kept Carthage weak and created constant border disputes, providing Rome with an eventual pretext for war.

Despite Carthage being militarily crippled after Hannibal's defeat, the psychological trauma of his invasion persisted in Rome. This "biding fear" was irrational given Carthage's weakness but powerfully shaped Roman policy for generations, ultimately leading to the city's destruction.

The historian Polybius described the Roman sack of New Carthage, noting the practice of killing indiscriminately—including cutting dogs in half—was a deliberate policy. This was not random brutality but a calculated psychological tactic to inspire terror and ensure swift surrenders in future conflicts.

Roman senator Cato was horrified to find Carthage thriving economically decades after its defeat. He perceived this prosperity—rich hinterlands, upgraded harbors, and stockpiled timber—as a direct threat, proving that a rival's economic resurgence can be a powerful catalyst for preemptive war.

Centuries after Hannibal's war, the poet Virgil created a foundational myth in "The Aeneid" portraying the conflict with Carthage not as politics but as the fulfillment of a divine curse from Queen Dido. This shaped Roman identity and justified their actions to future generations.