This paper briefly highlights some of the major impacts and influences that IUCN Resolutions have had on conservation. It is not meant to be comprehensive, but rather to focus attention on some of the most significant issues that the IUCN Membership has addressed, working together with IUCN’s six Commissions (on Species, Protected Areas, Environmental Law, Ecosystem Management, Communications and Education, and Environmental, Economic and Social Policy) and supported by IUCN’s Secretariat.