Would the leadership of Iran martyr its population?

Scenario: Military leadership controls all centers of power in Iran, albeit shakily from a sham election. How to consolidate power? Crush opposition (short term), start a shooting war with Isreal (medium term), nuke Isreali city, get paved by Isreali nukes in retaliation (long term). This final cataclysmic end of their nation would only be the beginning of a final war with Isreal, in which the worldwide Muslim community would finally come together in their shared anguish and opprobium. In this scenario, the hostage population of Iran is slaughtered by a few well protected military leaders with a long term agenda, that doesn't require Iran to continue to exist, as the opening blow in their final war. Tell me: why won't this happen?