In a low, stucco building in the hills behind Zurich, Tunisia's President Habib Bourguiba was ostensibly taking a "nature cure." Actually, he was hard at workas an invited friend of both sidesdirecting the elaborate maneuvers designed to bring an end to the six-year-old Algerian war.
For two weeks Bourguiba had dutifully followed his medical instructions by drinking a pint of apple juice a day and taking brisk walks in the Swiss woods (though he passed up the clinic's vegetable dinners in favor of juicy steaks sent in from a nearby hotel). But his hospital room was piled with newspapers and books,...