NEXT WORLD TRADE NEGOTIATIONS MUST SUCCEED - NZ Ministers from more than 20 nations were told by New Zealand that the next international negotiations on liberalising trade would be the last this century and the cost of failure could not be measured. Trade minister Mike Moore told his colleagues at a welcoming ceremony before two days of talks here that great progress had been made in preparing for the negotiations which must not be sidetracked. "We live in troubled and dangerous times for the world trading system," he said. "We have seen that the failure of the world trading system has caused great depression and conflict in the past. Our failure to maintain the momentum will be at great cost to us all," Moore said. He added: "The cost of failure is beyond calculation. It is our last hope and best opportunity this century. We will not get another chance before the year 2000." The ministers are in New Zealand to review world trade since the "Uruguay round" talks last Sepember. The meeting is also part of preparations for a full-scale conference of the General Agreement on Tariffs and Trade (GATT) in Venice in June. The Uruguay meeting is considered by most countries to have been particularly successful, with northern hemisphere countries managing to have service industries such as banking and insurance included in the next full round. The southerners' goal of including agricultural and tropical products also was met. The meeting at this North Island tourist resort is described by participants as informal and no declaration is expected. Moore said one aim was to "instil a sense of political urgency to avert potential economic tragedy." Another was to seek ways of popularising freer trade to people who felt the pain of readjustment but could not see the benefits, as well as preventing "bush fires of confrontation while we proceed with orderly negotiations." The meeting is being attended by 25 overseas delegations including representatives of GATT and the Economic Community. The delegates include U.S. Trade Representative Clayton Yeutter. American sources say he is ready to state that the best way to reverse protectionist sentiment in the United States is to implement four key Uruguay proposals: -- an end to agricultural subsidies; -- inclusion of trade in services and investments in GATT regulations; -- tightening of restrictions on pirating of so-called intellectual property such as trademarks, patents and copyrights; -- new rules to resolve trade disputes among GATT's 92 member states. Earlier, New Zealand sources had said French Foreign Trade Minister Michel Noir had pulled out of the informal GATT talks for domestic political reasons. Cabinet chief Bernard Prauge will lead the French delegation.