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Coverage · NATO Eastern Flank

Relationship record

Finland and the eastern flank — The United States and the eastern flank

The bilateral framework for US forces' access to agreed Finnish facilities, signed in December 2023 on the alliance's longest border with Russia.

Defence agreement Since 2023-12-18

Active
Assessed as of
2023-12-18
Last reviewed
2026-10-29

AssessmentHigh confidence

A described arrangement, not a rating. Vigil publishes no measure of how strong, warm or hostile a relationship is, and no relationship on this site carries a score, a trend or a direction of travel. What is recorded is what the arrangement covers, when it began, what has changed it, and how firmly each of those is established.

Finland and the eastern flankDefence agreement withThe United States and the eastern flankDefence agreement with
In short

A Defense Cooperation Agreement between the United States and Finland, signed on 18 December 2023, setting the legal framework for US forces' presence and activities at agreed facilities and areas in Finland.

A symmetric arrangement: it reads the same from either side. Authored once, on one record.

The arrangement

Status
ActiveIn force and operating. Says nothing about how well it is working, or about which way it is heading.
What it covers
DefenceBasingLegal and treatyCategories the arrangement is documented to include. Not a measure: a relationship covering more of them is described in more detail, not held more firmly.

Summary

The United States and Finland signed a Defense Cooperation Agreement on 18 December 2023, eight months after Finland joined NATO. It sets the legal terms under which US forces may be present at and use agreed facilities and areas in Finland, supplementing the NATO status-of-forces arrangements. It is an access framework, not a stationing decision.

Why it matters

Finland holds the alliance's longest land border with Russia. Whether US forces can legally operate from Finnish facilities is a question this agreement answers in advance of any crisis — which is the point of signing it in peacetime.

Agreements

  • US-Finland Defense Cooperation Agreement · signed 2023-12-18

    Signed in Washington. Its entry into force and the list of agreed facilities are not carried here.

Related events

What remains unknown

  • The agreed facilities and areas are not enumerated. Base locations are governed by this module's sensitivity rules and are not authored from this agreement.
  • The date of entry into force was not read for this pass.
  • No US presence in Finland is recorded on the strength of the agreement; access is not stationing.

All NATO Eastern Flank relationships Open in Explore

Sensitivity: public-contextual Confidence: High Sources: US Department of State bureau fact sheets↗ · Official government statements Methodology Corrections

Assessed as of — 2023-12-18 Last reviewed — 2026-10-29