US-Colombia Row Over Flammable Chinese Herbicide
A 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.

TO 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/GettyImages
|Updated: