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Islamic constitution

As part of the pivot from guide of a broad political movement to strict clerical ruler, Khomeini's first expressed approval of the provisional constitution for the Islamic Republic that had no post of supreme Islamic clerical ruler. But after his supporters gained an overwhelming majority of the seats in the body making final changes in the draft (the Assembly of Experts), they rewrote the proposed constitution to include an Islamic jurist Supreme Leader of the country, and a more powerful Council of Guardians to veto un-Islamic legislation and screen candidates for office, disqualifying those found un-Islamic.

The Supreme Leader followed closely but not completely Khomeini ideas in his 1970 book Hokumat-e Islami: Velayat-e faqih (Islamic Government: Governance of the Jurist) (mentioned above), that had been distributed to his supporters and kept from the public.