Quad: membership history 2007–2026
Quad began in 2007 with 4 members. In 2026 it had 4 members. Membership changed in 3 years, including the 2007 founding.
Source: The groupings’ own member lists and histories, 10 Nov 20262007–2026
200720112015201820222026
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Membership, 2026
Joined that yearMemberLeft that yearFormer member
Not a member
Borders show who controls an area in practice, as drawn by Natural Earth. Disputed borders are dashed. Borders shown do not imply endorsement. How we treat borders
Timeline
| 2007 | Australia, India, Japan and United States | – | 4 | |
|---|---|---|---|---|
| 2008 | – | Australia | 3 | Australia withdrew, and the four countries stopped meeting. |
| 2017 | Australia | – | 4 | The four countries revived the dialogue. |
Source: The groupings’ own member lists and histories, 10 Nov 20262007–2026
Every country that has been a member
| Australia | 2007 | 2007–2008, 2017– |
|---|---|---|
| India | 2007 | 2007– |
| Japan | 2007 | 2007– |
| United States | 2007 | 2007– |