The 1978 publication by the Ministry of Foreign Affairs of Democratic Kampuchea, entitled "Black Paper: Facts and Evidences of the Acts of Aggression and Annexation of Vietnam Against Kampuchea," is a comprehensive work in the field of geopolitical analysis. This document meticulously chronicles Vietnam's persistent expansionist aspirations, tracing their territorial encroachments from the annexation of Champa and Kampuchea Krom to their political infiltration and military aggression against Democratic Kampuchea. The document meticulously details subversive activities, clandestine networks, and the broader strategy of the Vietnamese 'Indochina Federation' that were utilized to justify Vietnamese domination. This work is indispensable for comprehending Kampuchea's quest for sovereignty, as it effectively debunks prevalent myths surrounding the conflict and underscores the resilience of the revolutionary populace.