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With major operations in Iraq and the Middle East, the purchase of new military equipment (including ships, vehicles and planes) and the increase in programs to counter violent extremism, how do we prioritise our defence spending and focus? Is the Government's commitment to increase defence spending to 2% of GDP within a decade warranted? And what will the defence white paper, due for release in August, likely reveal?

Fifth Estate host Sally Warhaft talks to defence expert and adviser to Chief of Airforce, Group Captain Catherine McGregor, about the shape of Australia's defence policy in action.

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