AUKUS, also styled as
Aukus, is a trilateral security partnership for the Indo-Pacific region between Australia, the United Kingdom, and the United States. Announced on 15 September 2021, the partnership involves the US and the UK assisting Australia in acquiring nuclear-powered submarines. The partnership also includes cooperation on advanced cyber mechanisms, artificial intelligence and autonomy, quantum technologies, undersea capabilities, hypersonic and counter-hypersonic, electronic warfare, innovation and information sharing. The partnership will focus on military capability, distinguishing it from the Five Eyes intelligence-sharing alliance that also includes New Zealand and Canada.