In its mirroring of the US position, the government is indicating it believes China needs to have its wings clipped, while Labor has taken a different view.
The espionage allegation against the Australian writer comes against a backdrop of rising trade and political tensions – and the Australian government's response is hardening.
Canberra may be making a limited commitment but what if there is an incident leading to an escalation and Australia finds itself embroiled in a wider conflict?