A closer look
If bombing a supply route doesn't work, you can always try playing God. During the Vietnam War, the U.S. military launched a highly classified initiative to manipulate the weather itself. By dropping silver iodide from planes, they seeded clouds to artificially extend the monsoon season, aiming to wash away the Ho Chi Minh trail in a torrent of man-made mud. It remains one of the only times in history that meteorology was used as a tactical weapon of mass disruption.




