Memorandum, David Colson (L/OES) to Ambassador Negroponte, June 4, 1987, Subject: L/OES's Evaluation of Litigation Risks in Relation to Government Decisions on the Regulation of Ozone-Depleting Substances [with attached memorandum, including Memorandum, Deborah Kennedy (L/OES) to John Negroponte (OES), July 14, 1986, Subject: CFC Litigation].