“Britain emerged from the devastation of the First World War an irreparably damaged economic and military power, with crushing debts and a deeply impaired manufacturing sector.  The dollar was able quickly to usurp the pound’s position. Final defeat for sterling came with Britain’s decision to leave the gold standard in 1931 – an economically sensible decision but a psychological turning point for sterling from which it never recovered.  Lack of any credible alternative means it won’t happen so quickly with the dollar. For all the progress of the last 30 years, China for now remains a much smaller economy than the US and in any case is nowhere near ready financially to assume such a role.”