Religious commandments are not useful unless they are applied to form a state on the basis of Divine guardianship.
Moreover, in order to protect the Islamic system, control the borders of Muslims from any enchroachment by the enemy, and prevent chaos in Islamic society, it is necessary to form an Islamic government.
Therefore, the reasons underlining the role of an Imam in the society, stand for the formation of a government in the absence of infallible Imams (‘a).
The leadership of an Islamic government has been specifically entrusted on a particular person in the absence of Imam Mahdi (‘a). But since the government is an Islamic in nature, its ruler should possess at least the following two qualifications: command over religious laws (fiqh); and he should be a just person.
The aforementioned argument supports the idea of forming a government in the Imam's absence. The late Ayatullah Burujirdi shared similar viewpoints with Imam Khomeini on this basic issue.
The salient feature of Imam Khomeini's view on the issue is that he drew the qualifications of the leader of an Islamic state from such discussions.
It should be noted that such a reasoning does not mean that any just faqih can become the guardian of the Islamic society. However, Imam does not elaborate on the methods of the selection of the ruler from amongst the fuqaha. But the jurisdiction of the guardianship of all fuqaha is limited to the enforcement of micro issues during the rule of an unjust ruler (Taqut's).