military security partnership by Australia, the United Kingdom and the United States

AUKUS, also known as Aukus (/ˈɔːkəs/; is an acronym for the alliance between "Australia, United Kingdom, United States"), is a three-way security pact between Australia, the United Kingdom, and the United States.[1] The agreement was created in 2020 to share defense technologies between the three countries to answer the possible threat China poses.[2]

A world map, depicting Australia, the United Kingdom, and the United States in green; all remaining countries are in grey
AUKUS signatories
Formation15 September 2021; 2 years ago (2021-09-15)
TypeMilitary alliance
PurposeCollective security

It allows Australia to buy its first nuclear submarines, though the Australian government says that the boats will not be nuclear armed.[2][3] These nuclear-powered submarines would be completed and ready for service in the mid to late 2030s. Experts say the nuclear subs can take longer trips than other submarines. They say the boats will give the alliance a stronger military presence in the region.[2]

The alliance also is to share computing technologies and cyber defenses.[2]

However, the agreement also led to a cancellation of a submarine deal between Australia and France. France was angry at the countries involved and recalled its ambassadors from Australia and the United States in response.[4]


  1. Ward, Alexander. "Biden to announce joint deal with U.K. and Australia on advanced defense-tech sharing". Politico. Retrieved 15 September 2021.
  2. 2.0 2.1 2.2 2.3 Robbins, Jill (16 September 2021). "U.S., Britain and Australia Announce New Security Partnership". Voice of America.   This article incorporates text from this source, which is in the public domain.
  3. "Aukus: China denounces US-UK-Australia pact as irresponsible". BBC News. 16 September 2021. Retrieved 16 September 2021.
  4. Massola, James; Shields, Bevan (2021-09-18). "France recalls its ambassadors to Australia and United States amid submarine fury". The Sydney Morning Herald. Retrieved 2021-09-21.