OPCW: Organization for the Prohibition of Chemical Weapons
OPEC: Organization of Petroleum Exporting Countries
OSCE: Organization for Security and Cooperation in Europe
Ozone Layer Protection: Montreal Protocol on Substances That Deplete the Ozone Layer
PCA: Permanent Court of Arbitration
PDRY: People's Democratic Republic of Yemen [Yemen (Aden) or South
Yemen]; used for information dated before 22 May 1990 or CY91
PFP: Partnership for Peace
PIF: Pacific Islands Forum
PPP: purchasing power parity
Ramsar: see Wetlands