The Intervention You Have When You're Not Having An intervention': Australia, PNG and the Enhanced Cooperation Program

The idea of non-interference in the domestic affairs of states has been a hallmark of international relations since the seventeenth century. The universalisation of the nation-state model following decolonisation over the twentieth century rendered this ideal of state sovereignty the basis of the modem international political system. States mostly keep out of each other’s business, but intervention may take the form of war to enforce regime change.