$2B Oil Lawsuit Has Investors Worried About Angola OilPrice.com U.S.-based oil company Cobalt filed for arbitration for a $2-billion suit against Angola's state-run Sonangol oil giant this week, according to court documents found by Reuters. The two parties were due to reach an agreement on license extensions for ... CORRECTED-US oil firm Cobalt files for arbitration against Angola for $2 bln |