Islamic State has declared a caliphate and want new citizens to wage holy war on the west. The Australian government should offer a deal to anyone who wants to go and live in the Caliphate because they are unhappy with our moral code: They can go on condition they surrender Australian citizenship and accept a travel ban to Australia. Free flights provided.
Then, if in 10 years ISIS are still pushing pushing for their prophesied armageddon, we can let them have it.