In 1867, French politician Adolphe Thiers (who became President of the French Republic in 1871) accused Napoleon III of erroneous foreign policy: "There is no mistake that can be made". Bismarck thought that French vanity would lead to war; he exploited that vanity in the Ems Dispatch in July 1870. France took the bait and declared war on Prussia, which proved to be a major miscalculation. This allowed Bismarck and Prussia to present the war to the world as defensive, although Prussia and Bismarck had aggressive plans, and they soon became known in relation to the annexation of the French provinces of Alsace and Lorraine.