Fusion Bomb

The Fusion Bomb emerges as a pivotal weapon of mass destruction in The Expanse series, first conceptualized in the tense geopolitical standoffs of later books after its absence in Leviathan Wakes. Its deployment escalates conflicts between Earth, Mars, and the Belt, showcasing devastating power capable of planetary annihilation and forcing uneasy alliances. Over the series, the Fusion Bomb evolves from a theoretical deterrent to a real threat, symbolizing humanity's precarious dance with extinction amid protomolecule chaos.