File photo dated 09/05/77 of (left to right) Prime Minister James Callaghan, French President Giscard d-Estaing, US President Jimmy Carter and West German Chancellor Helmut Schmidt during the Summit of Seven, the four-nation meeting at 10 Downing Street. Carter, the 39th president of the United States, has died aged 100. Issue date: Sunday December 29, 2024.