Inside Tehran, the development has brought admissions of diplomatic defeat, fierce factional disputes, and for the first time, explicit parliamentary calls to build nuclear weapons. On September 31, more than 70 MPs signed a letter demanding a revision of Iran’s defense doctrine and openly calling for nuclear weapons. “Possessing a nuclear weapon is deterrence,” the letter stated, even while citing Khamenei’s 2010 fatwa against use. From Cairo Deal to Snapback: #Iran’s Power Struggle Goes Nuclearhttps://t.co/7IEvb6hTJR — NCRI-FAC (@iran_policy) September 22, 2025Escalation ThreatsOther figures echoed escalation. As snapback sanctions take hold, Iran’s rulers face a stark dilemma.