=== 1977 UN Environmental Modification Convention ===
Vejrmanipulation, og specielt brugt i krig, blev påtalt af [[FN|FN's]] generalforsamlings resolution 31/72, TIAS 9614 Convention<ref>{{cite web|url=http://www.fas.org/nuke/control/enmod/text/environ2.htm |title=Environmental Modification Convention |publisher=Fas.org |date= |access-date=2011-06-04}}</ref> on the Prohibition of Military or Any Other Hostile Use of Environmental Modification Techniques." Conventionen blev signeret i Geneve den 18.5.1977 og trådte i kraft den 5.10.1978, og blev underskrevet af daværende amerikanske president Jimmy Carter den 13.12.1979.<ref name="dos">{{cite news | first= | last= | title=Convention on the Prohibition of Military or Any Other Hostile Use of Environmental Modification Techniques | date= | publisher=[[United States Department of State]] | url=http://www.state.gov/t/ac/trt/4783.htm | work= | pages= | access-date=2007-09-28 | language= | archive-url=https://web.archive.org/web/20070914081350/http://www.state.gov/t/ac/trt/4783.htm | archive-date=14. september 2007 |url-status=live }}</ref>
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