Indo-Pacific Four
The Indo-Pacific Four are four NATO partners in the Asia–Pacific region: South Korea, Japan, New Zealand, and Australia. All four countries border the western Pacific Ocean: Japan and South Korea in East Asia, Australia and New Zealand in Australasia.
Amid a more volatile regional security landscape, experts have recently argued for stronger cooperation between the IP4 and both Europe and the US, with the goal of fostering a more stable Indo-Pacific region.