Chatham House Chatham House The Royal Institute of International Affairs, commonly known as Chatham House, is a not-for-profit and non-governmental organisation based in London whose mission is to analyse and promote the understanding of major international issues and current affairs. It is the originator of the Chatham House Rule and takes its name from the building where it is based, 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. In the University of Pennsylvania’s rankings (announced in January 2017) for their
George III of the United Kingdom Prime Minister. After a brief illness, which may have presaged his illnesses to come, George settled on Lord Rockingham to form a ministry, and dismissed Grenville. Lord Rockingham, with the support of Pitt and the King, repealed Grenville's unpopular Stamp Act, but his government was weak and he was replaced in 1766 by Pitt, whom George created Earl of Chatham. The actions of Lord Chatham and George III in repealing the Act were so popular in America that statues of them both were erected in New York City. Lord Chatham fell ill in 1767, and the Duke of Grafton took