System of government, for example, brought in by Muslim ruler after revolution (6)
I believe the answer is:
regime
'system of government' is the definition.
(thesaurus)
'example brought in by muslim ruler after revolution' is the wordplay.
'example' becomes 'eg'.
'brought in by' is an insertion indicator.
'muslim ruler' becomes 'emir' (I've seen this before).
'after revolution' is a reversal indicator.
'emir' written backwards gives 'rime'.
'eg' placed inside 'rime' is 'REGIME'.
'for' is the link.
(Other definitions for regime that I've seen before include "Authoritarian system" , "The government in power or systematic plan" , "co-ordinated programme" , "Dominion of emigre" , "Governing authority or therapy plan" .)