The Northern Territory gains recognition as a sovereign state by the UN. Elections are held, and Jemaah Islamiyah as it stands right now, wins the election by majority and becomes the recognised governing body of a legally recognised sovereign state.
As Australia, what do we do?.
Just for the sake of Doc, who struggles with hypotheticals, let's assume the Indigenous population of the Northern Territory initially won the independence.
As an addition for Doc: Within the Shia theological framework, the concept of taqiyya (تقية - 'fear, guard against', also taghiyeh) refers to a dispensation allowing believers to conceal their faith when under threat, persecution or compulsion.