An attorney for Chevron Corp on Tuesday accused U.S. lawyer Steven Donziger of orchestrating an international criminal conspiracy by using bribery and fraud in Ecuador to secure a multibillion-dollar pollution judgment against the oil company…Lawyers for the defense said Chevron had failed to prove Donziger's involvement in any conspiracy…The six-week trial concerned an $18 billion judgment issued in 2011 against Chevron by Judge Nicolas Zambrano in Ecuador. The ruling was in favor of a group of villagers, who claimed Texaco had contaminated an oil field in northeastern Ecuador…This month, Ecuador's Supreme Court cut the amount to $9.5 billion. Chevron, which later acquired Texaco, has said Texaco remediated the site before closing operations. The company hopes a verdict from Kaplan that the judgment was based on fraud will help it defend against attempts to enforce the judgment outside Ecuador.