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Environmental Modification Convention

Parties to the Environmental Modification Convention undertake not to engage in military or any other hostile use of environmental modification techniques having widespread, long-lasting or severe effects as the means of destruction, damage or injury to any other State Party.

In July 1972 the U.S. Government renounced the use of climate modification techniques for hostile purposes, even if their development were proved to be feasible in the future. On December 10, 1976 the General Assembly adopted a resolution by a vote of 96 to 8, with 30 abstentions, which referred the Convention to all member nations. The Senate gave its advice and consent to ratification on November 28, 1979, by a vote of 98-0. The President ratified the Convention December 13, 1979. The Convention entered into force for the United States on January 17, 1980, when the U.S. instrument of ratification was deposited in New York.

Primary documents, including treaty text and associated memoranda, statements and other related material, as well as official factsheets, announcements, briefings speeches and other related material.

Chronological archive of news reports, commentary analysis and other related material.

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