United States → United Kingdom
This score represents United States's relationship toward United Kingdom. The reverse direction is calculated separately and shown alongside it.
SIX-COMPONENT MODEL
Current component scores
Component values run from −100 to +100 and are combined with the published weights.
3 documented factors produce the +95 security assessment.
Why this score?
- +60NATO collective-defence obligationBaseline rule · 2015
The United States and United Kingdom remained bound by Article 5 of the North Atlantic Treaty.
- +25Unparalleled defence and intelligence cooperationBaseline rule · 2015
The UK security strategy identified the United States as its pre-eminent partner and documented exceptional nuclear, intelligence and military interoperability.
- +10AUKUS defence partnership launchedActive event · 2021
The new trilateral partnership deepens defence, technology and Indo-Pacific security integration.
4 documented factors produce the +70 diplomacy assessment.
Why this score?
- +20Leaders reaffirm the bilateral partnershipBaseline rule · 2015
The two leaders jointly described the relationship as a foundation of shared security and prosperity.
- +35Pre-eminent foreign-policy partnershipBaseline rule · 2015
The UK strategy formally identified the United States as its pre-eminent partner for security, defence, foreign policy and prosperity.
- +10New Atlantic CharterActive event · 2021
The leaders renewed their shared framework for democracy, security, trade, technology and the international order.
- +5Atlantic DeclarationActive event · 2023
A new economic-security framework expands cooperation on supply chains, critical technologies, defence and clean energy.
3 documented factors produce the +65 economic assessment.
Why this score?
- +15Institutional economic cooperationBaseline rule · 2015
The leaders documented joint work on transatlantic trade, finance and shared prosperity.
- +35Bilateral trade thresholdBaseline rule · 2015
Reported trade activates the absolute methodology route using the latest observation available for this year.
- +15Atlantic DeclarationActive event · 2023
A new economic-security framework expands cooperation on supply chains, critical technologies, defence and clean energy.
5 documented factors produce the +65 alignment assessment.
Why this score?
- +50Broad strategic alignmentBaseline rule · 2015
The leaders documented aligned action on defence, counterterrorism, global health, trade and international crises.
- +15United Nations voting alignmentBaseline rule · 2015
A rolling three-year comparison of UN General Assembly votes activates the alignment threshold.
- +10New Atlantic CharterActive event · 2021
The leaders renewed their shared framework for democracy, security, trade, technology and the international order.
- +5AUKUS defence partnership launchedActive event · 2021
The new trilateral partnership deepens defence, technology and Indo-Pacific security integration.
- -15Annual methodology 1.1 recalculationAnnual recalculation · 2026
The current component replaces the 2015 quantitative threshold or time-bounded structural package with the evidence applicable in the selected year.
1 documented factor produce the +15 disputes assessment.
Why this score?
- +15Durable cooperative bilateral orderBaseline rule · 2015
The official bilateral account describes an alliance and partnership without an active territorial or sovereignty dispute.
1 documented factor produce the +35 societal assessment.
Why this score?
- +35Exceptional societal relationshipBaseline rule · 2015
The joint account describes durable connections spanning science, shared institutions, values and public life.
+59 in 2015 → +68 in 2026
The change is generated from sourced events and frozen scoring rules, not retrospective editorial adjustment.
0 points
United States → United Kingdom and United Kingdom → United States remain independent assessments.
View the reverse direction →ACTIVE EVIDENCE
Events affecting the current score
New Atlantic Charter
The leaders renewed their shared framework for democracy, security, trade, technology and the international order.
AUKUS defence partnership launched
The new trilateral partnership deepens defence, technology and Indo-Pacific security integration.
Atlantic Declaration
A new economic-security framework expands cooperation on supply chains, critical technologies, defence and clean energy.
This analytical score is not an objective fact, endorsement or prediction. Confidence reflects evidence coverage, while incomplete or unavailable observations remain explicit. Differences below 5 points are treated as practical ties rather than a meaningful ranking.
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