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
John Pitt, 2nd Earl of Chatham was back in Britain and in 1782 obtained a captaincy in the London-based 3rd Regiment of Foot Guards. Although he was appointed colonel in October 1793 and major-general in February 1795, Chatham does not appear to have undertaken any military duties for nearly fifteen years after the end of the War of American Independence in 1783. For much of the 1780s and 1790s Chatham focused on a political career. His brother, William Pitt the Younger, became prime minister in December 1783, and in July 1788 offered Chatham the cabinet post of First Lord of the Admiralty. 'I have had my