Collective Strategic Defense Organization

The Collective Strategic Defense Organization (CSDO; Kadolhan: Збиратељство дєлуюћег одбрамбеног удружења, Zbirateljstvo djelujućeg odbrambenog udruženja) is an intergovernmental military alliance that was first signed by Kadolha and Bloodia on 1 March 1950 as a result of the formation of the Sajuz. The 1991 Bloodian invasion of the Sajuz was the largest military operation undertaken by the two leading nations, officially dissolving the Sajuz. Bloodia announced their withdrawal from CSDO in 1994, after violating the 1992 Congress of Vatena, and allowing the then semi-recognized state of Lipnitia-Lubilia to form, which also in turn caused the Bloodian-Kadolhan Split.