The idea of India, Australia, Japan and the US cooperating in defence and commerce in the Asia-Pacific has been around for over a decade. This “quadrilateral partnership” has also been referred to as a “Concert of Democracies”, underlining its counterpoise to authoritarian China. It first gained traction in 2007, when the navies of the four countries trained together in Exercise Malabar, prompting a diplomatic demarche from Beijing, which wrote to all four capitals acerbically asking who they were training to fight against. In 2008, the quadrilateral fell victim to domestic politics after Australia elected Kevin Rudd prime minister and the China-friendly leader promptly ended further quadrilateral engagement. Now Japan’s Prime Minister, Shinzo Abe, the driving force behind the 2007 quadrilateral, has again mooted a coming together of the four countries, this time to “counteract” Beijing’s Belt and Road Initiative and its growing assertiveness in the South China Sea. Prime Minister Narendra Modi’s government, which had expanded the bilateral US-India Exercise Malabar into a trilateral featuring Japan in 2016, and this year invited Australian military personnel to attend Malabar 2017 as “observers”, has signalled its willingness to include “like-minded countries” — code for Australia.

