Uncertainty reigned in Venezuela after President Nicolas Maduro unveiled a major economic reform plan aimed at halting the spiraling hyperinflation that has thrown the oil-rich, cash-poor country into chaos. Ahead of a major currency overhaul on Monday, when Caracas will start issuing new banknotes after slashing five zeroes off the crippled Bolívar, Maduro detailed other measures he hopes will pull Venezuela out of crisis.