signed, but not ratified: Climate Change-Kyoto Protocol, Nuclear
Test Ban

Western Sahara:
party to: none of the selected agreements

signed, but not ratified: none of the selected agreements

Yemen:
party to: Biodiversity, Climate Change, Desertification,
Endangered Species, Environmental Modification, Hazardous Wastes,
Law of the Sea, Ozone Layer Protection

signed, but not ratified: Nuclear Test Ban

Yugoslavia:
party to: Air Pollution, Climate Change, Hazardous
Wastes, Law of the Sea, Marine Dumping, Marine Life Conservation,
Nuclear Test Ban, Ozone Layer Protection, Ship Pollution, Wetlands

signed, but not ratified: Biodiversity

Zambia:
party to: Biodiversity, Climate Change, Desertification,
Endangered Species, Hazardous Wastes, Law of the Sea, Nuclear Test
Ban, Ozone Layer Protection, Wetlands

signed, but not ratified: Climate Change-Kyoto Protocol

Zimbabwe:
party to: Biodiversity, Climate Change, Desertification,
Endangered Species, Law of the Sea, Ozone Layer Protection