Relationship dossier
Ireland
United States
Relationship assessment
Close bilateral ties, including cooperation on Northern Ireland, alongside debate over US military transit and Irish neutrality.
Ireland toward United States
+65Irish governments have maintained substantive engagement with the United States, including cooperation with US efforts supporting the Northern Ireland peace process and bilateral arrangements such as the tax treaty signed in 1997. Irish policy has also allowed US military aircraft to transit Shannon Airport, a practice that has prompted domestic debate over neutrality.
United States toward Ireland
+70The United States has supported the Northern Ireland peace process through sustained diplomatic engagement, including a role in the negotiations that produced the 1998 Good Friday Agreement. The two governments also maintain bilateral arrangements, including the 1997 tax treaty.
Overall relationship
+70The relationship is characterized by durable political engagement and cooperation on Northern Ireland, reinforced by bilateral agreements. The United States’ involvement in the peace process and Ireland’s sustained engagement with Washington are major features. Debate over US military transit through Shannon Airport and Irish neutrality is a recurring point of friction, but does not define the broader 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
Ireland and the United States maintain a close, durable relationship, with substantial government cooperation on the Northern Ireland peace process and long-standing bilateral arrangements including a tax treaty. The United States played an active role in supporting the peace process, while Irish governments have maintained close engagement with Washington. Cooperation coexists with debate in Ireland over the use of Shannon Airport by US military aircraft and the implications for Irish neutrality.
Areas of tension
- Use of Shannon Airport by US military aircraft has prompted debate in Ireland over neutrality and oversight.
Key developments
Ireland and the United States signed a bilateral income tax treaty.
The Good Friday Agreement was concluded after negotiations involving active US diplomatic engagement.
Major uncertainties
- The extent and current implementation of bilateral cooperation beyond the peace process and established agreements are unclear.
- The scale and practical scope of Irish government oversight of US military transit through Shannon Airport are unclear.