LEADING COCOA PRODUCERS DISCUSS INTERNATIONAL PACT Leading cocoa producers will discuss whether newly-agreed rules on an international cocoa buffer stock will succeed in reversing a sharp fall in world prices when they start four day's of talks here later today, conference sources said. Another topic likely to be discussed at the twice-yearly meeting of the Cocoa Producer Alliance (CPA) is the pact's second line of market support -- a witholding scheme under which exporters can take up to 120,000 tonnes of cocoa off the market if buffer stock purchases fail to defend prices. The International Cocoa Organisation is due to discuss the scheme at a meeting in June, and exporters could use the Yaounde talks to work out a common position on the issue, the sources said. Delegates will also be briefed on arrangements for an international cocoa research conference due to take place in Santo Domingo in the Dominican Republic next month, CPA secretary general D.S. Kamga said. The 11-member CPA include the world's top three producers of Ivory Coast, Brazil and Ghana and accounts for around 80 pct of world output.