Natalie Peters and Erin Molan speak to counter-terrorism expert Greg Barton about the latest incident in London and the threat level in Australia.  

<p>Natalie Peters and Erin Molan speak to counter-terrorism expert Greg Barton about the latest incident in London and the threat level in Australia.&nbsp;&nbsp;</p>

Join Natalie Peters and Erin Molan on 'The Weekend Edition'

<p>Join Natalie Peters and Erin Molan on 'The Weekend Edition'</p>

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