A panel of three international arbitrators has found that United States oil company Chevron is not liable for “collective damage” claims in the company’s ongoing dispute over oil contamination in parts of Ecuador’s Amazon rainforest. The panel reportedly found that a 1995 agreement signed by Chevron’s predecessor, Texaco Corporation, released the oil giant from such liability. Still, the panel of arbitrators did not rule whether Chevron may be held liable for any damages endured by individual...