Staff writer

KYOTO -- Delegates to the Fourth United Nations Conference on Disarmament Issues in Kyoto discussed the nonproliferation treaty Thursday morning, urging the U.N. Security Council to do more to prevent the spread of weapons of mass destruction.

"While some agreements, notably the Antipersonnel Mines Treaty, have been a success, over the last 10 years, the five declared nuclear powers (the United States, Great Britain, France, Russia and China) have failed to pursue disarmament vigorously," said Marcos Azambuja, the Brazilian ambassador to France.