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The Royal Institute of International Affairs | |
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.jpg) Entrance to Chatham House in 2012 | |
| Established | 1920 |
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| Headquarters | 10 St James's Square London, England |
Membership | 6,000 (approx.) |
| Website | chathamhouse |
Formerly called | The British Institute of International Affairs |
The Royal Institute of International Affairs, commonly known as Chatham House, is a British think tank based in London, England. Its stated mission is "to help governments and societies build a sustainably secure, prosperous, and just world". It is the originator of the Chatham House Rule.