Even the 55-year-old squabble between Bolivia and Paraguay over the Gran Chaco must end some day. Last week it looked as if Paraguay, with one-third the population, one-eighth the area and one-twelfth the wealth of big Bolivia, had a chance to win. A combination of dumb Bolivian politics and smart Paraguayan tactics had lured Bolivia into making a terrible mistake.
Six times this year General José Felix Estigarribia's little brown troopers tried to carry the Bolivian "Verdun," Fort Ballivian, by assault. Six times they failed. Last July Estigarribia moved ostentatiously away to...