US-Colombia Row Over Flammable Chinese HerbicideA Chinese-made herbicide used to kill off illegal crops, including coca, may cause a division between Colombia and U.S. narcotics agents operating inside the country.Friends Read FreeCopyFacebookXTruthGettrLinkedInTelegramEmailSaveTO GO WITH AFP HISTORY BY GUILLERMO BARROS Farmers walk across a coca plantation in the mountains of the department of Cauca, Colombia, on June 21, 2012. LUIS ROBAYO/AFP/GettyImagesBy Alex Johnston8/27/2012Updated: 10/1/2015Print