United States
party to: Air Pollution, Air Pollution-Nitrogen
Oxides, Antarctic-Environmental Protocol, Antarctic-Marine Living
Resources, Antarctic Seals, Antarctic Treaty, Climate Change,
Desertification, Endangered Species, Environmental Modification,
Marine Dumping, Marine Life Conservation, Ozone Layer Protection,
Ship Pollution, Tropical Timber 83, Tropical Timber 94, Wetlands,
Whaling
signed, but not ratified: Air Pollution-Persistent Organic
Pollutants, Air Pollution-Volatile Organic Compounds, Biodiversity,
Climate Change-Kyoto Protocol, Hazardous Wastes

Uruguay
party to: Antarctic-Environmental Protocol, Antarctic-Marine
Living Resources, Antarctic Treaty, Biodiversity, Climate Change,
Climate Change-Kyoto Protocol, Desertification, Endangered Species,
Environmental Modification, Hazardous Wastes, Law of the Sea, Ozone
Layer Protection, Ship Pollution, Wetlands
signed, but not ratified: Marine Dumping, Marine Life Conservation

Uzbekistan
party to: Biodiversity, Climate Change, Climate
Change-Kyoto Protocol, Desertification, Endangered Species,
Environmental Modification, Hazardous Wastes, Ozone Layer
Protection, Wetlands
signed, but not ratified: none of the selected agreements

Vanuatu
party to: Antarctic-Marine Living Resources, Biodiversity,
Climate Change, Climate Change-Kyoto Protocol, Desertification,
Endangered Species, Law of the Sea, Marine Dumping, Ozone Layer
Protection, Ship Pollution, Tropical Timber 94
signed, but not ratified: none of the selected agreements

Venezuela
party to: Antarctic Treaty, Biodiversity, Climate Change,
Climate Change-Kyoto Protocol, Desertification, Endangered Species,
Hazardous Wastes, Marine Life Conservation, Ozone Layer Protection,
Ship Pollution, Tropical Timber 83, Tropical Timber 94, Wetlands
signed but not ratified:: none of the selected agreements

Vietnam
party to: Biodiversity, Climate Change, Climate Change-Kyoto
Protocol, Desertification, Endangered Species, Environmental
Modification, Hazardous Wastes, Law of the Sea, Ozone Layer
Protection, Ship Pollution, Wetlands
signed, but not ratified: none of the selected agreements

Western Sahara
party to: none of the selected agreements

Yemen
party to: Biodiversity, Climate Change, Climate Change-Kyoto
Protocol, Desertification, Endangered Species, Environmental
Modification, Hazardous Wastes, Law of the Sea, Ozone Layer
Protection
signed, but not ratified: none of the selected agreements

Zambia
party to: Biodiversity, Climate Change, Climate Change-Kyoto
Protocol, Desertification, Endangered Species, Hazardous Wastes, Law
of the Sea, Ozone Layer Protection, Wetlands
signed, but not ratified: none of the selected agreements

Zimbabwe
party to: Biodiversity, Climate Change, Desertification,
Endangered Species, Law of the Sea, Ozone Layer Protection
signed, but not ratified: none of the selected agreements