Australia has been forced to rapidly recalibrate its response to the threat of Islamist terrorism over the past few months. International intelligence failed to predict the speed with which the extremist Islamic State has swept through parts of Syria and Iraq.

Forces from the US, the UK, France, Australia, Kurds and some Iraqis are racing to prevent the Islamist psychopaths slaughtering the remnant 30,000-member Yazidi community on Mt Sinjar in northern Iraq in an act of genocide.

It is estimated as many as 150 young Australians have joined the ranks of the Islamic State murderers. They thrive on publicity and will certainly not be named here, despite their notoriety.

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