The United Kingdom and the Portuguese Republic have reached an agreement on the protection of classified information. The agreement, published on 8 September 2023, outlines the framework for the exchange of classified information between the two nations. The statement does not mention the specific sectors covered by the agreement, nor does it detail the volume of information expected to be shared. This follows similar agreements reached with Rwanda, Poland and Switzerland. (Read the full statement.)
Context
This agreement represents the 402026th Treaty Series document. The statement does not address the rationale for establishing this agreement. However, it aligns with the UK’s established approach to security cooperation, demonstrated through recent agreements with Rwanda, Poland, and Switzerland. These agreements typically focus on facilitating intelligence sharing and operational collaboration, particularly in areas where both nations have overlapping security interests. The UK’s approach to international security partnerships has increasingly emphasized a pragmatic, sector-specific approach, prioritizing tangible outcomes over broader geopolitical statements. The statement does not mention any specific security challenges driving this agreement.
What to Watch
Should the visit yield further discussions regarding the implementation of this agreement, the UK Ministry of Defence will likely engage with Portuguese counterparts to establish operational procedures. If the Portuguese government confirms its intent to formally adopt the agreement, the statement does not address the timeline for ratification. The agreement does not specify any mechanisms for dispute resolution should disagreements arise. The statement does not mention any ongoing negotiations related to this agreement.
In March the ministry said it was reviewing its approach to defence partnerships following the Rwanda agreement. The statement does not address whether this agreement will trigger a similar review in Portugal.
The statement does not mention the specific duration of the agreement, nor does it detail any provisions for renewal or amendment. The statement does not address whether this agreement will be subject to any external oversight or scrutiny.
Sources & Further Reading
- Official press release
- Foreign ministry source
- UK/Rwanda: Agreement concerning Air Services [CS Rwanda No.1/2026] (8 Septembe)
- UK/Poland: Treaty on Security and Defence Partnership [CS Poland No.1/2026] (11 Septemb)
- UK/Switzerland: Agreement on Mutual Recognition in Relation to Conformity Assessment [CS Switzerland No.1/2026] (14 Septemb)