Chatham House, also known as The Royal Institute of International Affairs, is a policy institute headquartered in London. Its stated mission is to provide commentary on world events and offer solutions to global challenges. It is the originator of the Chatham House Rule. Canadian philanthropists Colonel Reuben Wells Leonard and Kate Rowlands Leonard purchased the property in 1923, donating the building as a headquarters for the fledgling organisation that then became known as Chatham House. The building is a Grade I listed 18th-century house in St James's Square, designed in part by Henry Flitcroft and occupied by three British Prime Ministers, including William Pitt, 1st Earl of Chatham. More information...
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