It hasn’t raised the terrorism threat level for a decade, so why is ASIO increasing it now?

The top spy body says a terrorist attack in Australia is now probable, up from possible. 

More people holding extreme ideologies are leading to a ‘volatile and unpredictable’ security situation. 

Today, we discuss what’s going on and how we should react, with counter-terrorism expert Lydia Khalil from the Lowy Institute. 

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Lydia Khalill, program director of transnational challenges at the Lowy Institute