Relationship dossier
Cambodia
Vietnam
Relationship assessment
Concrete cooperation coexists with unresolved border sensitivities and the legacy of Vietnam’s intervention in Cambodia.
Cambodia toward Vietnam
+20Cambodia has pursued bilateral agreements with Vietnam on border demarcation and has cooperated with Vietnam through political and security channels. These measures indicate practical cooperation, while border sensitivities and domestic concerns about Vietnamese influence remain part of the relationship.
Vietnam toward Cambodia
+15Vietnam has concluded border agreements with Cambodia and maintained political, security, and economic cooperation with its neighbor. Its 1978 military intervention and the ensuing occupation of Cambodia remain a major source of historical tension.
Overall relationship
+15The enduring relationship combines formal border cooperation and sustained political engagement with the lasting effects of Vietnam’s intervention and occupation of Cambodia. Border demarcation has been addressed through bilateral agreements, but sensitivities over the border and Vietnamese influence complicate an otherwise significant cooperative relationship.
How to read these scores
Scores are rough judgments, not objective measurements or current verification. Directional scores describe government policy and conduct, not public opinion. The overall score is an independent estimate, never an average.
- −100
- Extreme sustained hostility
- −50
- Substantially adversarial
- 0
- Mixed or neutral, supported by knowledge
- +50
- Substantially cooperative
- +100
- Exceptionally close sustained partnership
“Not assessed” means there is no recorded score. Pair existence makes no claim about diplomatic recognition or established relations.
Relationship context
Overview
Cambodia and Vietnam have maintained substantial political and security cooperation, including agreements addressing their shared border. The relationship is also shaped by Vietnam’s 1978 military intervention and subsequent occupation of Cambodia, as well as persistent disputes and sensitivities over border demarcation and Vietnamese influence. Cooperation is concrete, but historical tensions keep the partnership from being consistently close.
Areas of tension
- Border demarcation and implementation of bilateral boundary agreements
- Historical disagreement and sensitivities surrounding Vietnam’s 1978 intervention and occupation of Cambodia
- Cambodian concerns about Vietnamese influence
Key developments
Vietnam invaded Cambodia and established a military occupation that lasted until 1989.
Cambodia and Vietnam signed a supplementary treaty addressing their land border.
The two governments signed additional instruments concerning their land boundary.
Major uncertainties
- The extent to which border-demarcation agreements have been fully implemented is unclear.
- The scope and continuity of current bilateral security and economic cooperation are uncertain.