Islamist Shi'ism (Persian: تشیع اخوانی) is a denomination of Twelver Shia Islam greatly inspired by the Sunni Muslim Brotherhood ideologies and politicized version of Ibn Arabi's mysticism. It sees Islam as a political system and differs from the other mainstream Usuli and Akhbari groups in favoring the idea of formation of Islamist state in occultation of the twelfth Imam. Hadi Khosroshahi was the first person to identify himself as ikhwani (Islamist) Shia. Because of the concept of the hidden Imam, Muhammad al-Mahdi, Shia Islam is inherently secular in the age of occultation, so islamist Shi'ites had to borrow ideas from Sunni islamists and adjust them with Shi'i outlook.