Relationship dossier
Lebanon
Syria
Relationship assessment
A historically asymmetric relationship combining Syrian intervention in Lebanon with later diplomatic and practical cooperation.
Lebanon toward Syria
-15Lebanese governments have maintained practical engagement with Syria on matters including refugees, border security and energy transit, while some have sought to limit Lebanon’s involvement in the Syrian conflict. Lebanon’s policy toward Damascus has varied across governments and political coalitions.
Syria toward Lebanon
-40Syria maintained a military presence in Lebanon for decades and exercised substantial political influence before withdrawing its forces in 2005. Subsequent diplomatic ties and practical cooperation have coexisted with disputes over sovereignty, borders, detainees and refugees.
Overall relationship
-25The enduring relationship is shaped by Syria’s former military presence and influence in Lebanon, which created a pronounced asymmetry and lasting sovereignty concerns. Diplomatic engagement and practical coordination have continued alongside disputes involving borders, refugees and detainees. The scale and consistency of cooperation have varied with political changes in both countries.
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
Lebanon–Syria relations have been shaped by Syria’s long military presence and political influence in Lebanon, alongside later efforts at diplomatic and practical cooperation. Lebanon’s governments have differed in their approach to Damascus, including efforts to limit involvement in the Syrian conflict and cooperation on refugee and security matters. The relationship remains marked by substantial historical asymmetry and unresolved bilateral issues.
Areas of tension
- Syrian military presence and political influence in Lebanon before the 2005 troop withdrawal
- Border demarcation and security
- Refugee returns and treatment
- Missing Lebanese detainees and people disappeared in Syria
Key developments
Syria withdrew its military forces from Lebanon after decades of presence.
Lebanon and Syria established formal diplomatic relations, including an exchange of embassies.
Major uncertainties
- The scope and consistency of Lebanese-Syrian security and refugee coordination are unclear.
- Implementation and effects of bilateral energy and transit arrangements are uncertain.
- Lebanese government policy toward Syria has varied across administrations and political coalitions.