The ENMOD Treaty

There are also major foreign policy concerns, beginning with the international ENMOD treaty—the Convention on the Prohibition of Military or Any Other Hostile Use ot Environmental Modification Techniques, ratified by the United Nations in 1978 in response to the United States' use of silver iodide cloud seeding to alter the weather over the Ho Chi Minh Trail during the Vietnam War. Operation Popeye was an effort to "make mud, not war" to slow North Vietnamese supply lines by lengthening the...