Business Companies economics Leila Ramsay AFRICA, ANGLO AMERICAN, AP, BOKO, BOTSWANA, CORRUPTION, DE, DE BEERS, DU, DUMA BOKO, ECONOMY, EUROPE/ASIA, FINANCE, GABORONE, INTERNATIONAL MONETARY FUND, INVESTMENT, LUCARA, MINING, RUSSIA Botswana Secures Enhanced Diamond Sales Agreement with De Beers