Iranian Politicians are pushing NPT withdrawal (Mar 29, 2026) under active US-Israeli bombardment. If Iran exits the Nuclear Non-Proliferation Treaty, the engine must model a proliferation cascade: Saudi Arabia has long maintained a 'Pakistani bomb on retainer' arrangement. Turkey has NATO nuclear sharing but Erdogan has publicly mused about independent capability. Egypt, historically the Arab world's military leader, would face existential pressure. South Korea and Japan, watching the US overextended in the Middle East, have latent capability and domestic political movements favoring nuclear weapons. The engine currently tracks the Iran war as a theater-level event. A proliferation cascade transforms it into a structural-level event that alters every prediction from 2027 forward. A world with 15 nuclear states is fundamentally different from one with 9. Falsification: if Iran formally withdraws from the NPT and NO other state initiates weapons programs within 24 months, the cascade thesis is wrong.