This week Australian Prime Minister Tony Abbott promised to 'shirtfront' Russian president Vladimir Putin at the Brisbane G20 Summit. The Interpreter's Sam Roggeveen spoke to Mike Callaghan, head of the Lowy Institute's G20 Studies Centre, about this recent verbal fussilade, and what it means for November's G20 summit in Brisbane.

Event audio and podcasts from the Lowy Institute

<p>Event audio and podcasts from the Lowy Institute</p>

Lowy Institute Archive

This week Australian Prime Minister Tony Abbott p…