FILE – In this Tuesday, May 17, 1960 file photo, President Charles de Gaulle of France, left, Premier Harold MacMillan of Britain, center, and U.S. President Dwight D. Eisenhower leave a summit at the Elysee Palace in Paris. De Gaulle would veto Britain’s application to join the then European Economic Community on two occasions that decade. Britain eventually joined in 1973 after De Gaulle’s successor, Georges Pompidou, lifted France’s veto. On Jan. 31, 2020, Britain is scheduled to leave what became known as the European Union. (AP Photo, File)