How did the U.S justify using agent orange and napalm?

They justified it by wanting to win a protracted, unpopular war. As American bombers headed to North Viet Nam to bomb the VC into the stone age, they found them particularly difficult to spot. read more

The US first used napalm during World War II in both the European and Pacific theaters, and also deployed it during the Korean War. However, those instances are dwarfed by American use of napalm in the Vietnam War, where the US dropped almost 400,000 tons of napalm bombs in the decade between 1963 and 1973. read more

Agent Orange Agent Orange is a toxic chemical herbicide that was used from about 1965 – 1970 in the Vietnam War. It was one of the main mixtures used during Operation Ranch Hand. read more