CONFLICTIQ
HEAD TO HEAD

United Kingdom vs United States

United Kingdom
9%
RAI
United States
91%

Verdict

United States holds a 91–9 advantage over United Kingdom on the Relative Advantage Index, a decisive margin.

The margin is driven by nuclear warheads (96% of the combined total, 5.2k) and military spending (91% of the combined total, $954bn).

Factor by factor

FactorUnited KingdomShareUnited StatesWeight
Military spending
SIPRI Milex
$89.0bn
9%91%
$954bn25%
Economic size (GDP)
World Bank WDI
$3.7tn
11%89%
$28.8tn20%
Active personnel
COW NMC
150.0k
10%90%
1.4m15%
Nuclear warheads
FAS Nuclear Notebook
225
4%96%
5.2k25%
Logistics & power projection
OurAirports
272
15%85%
1.6k15%

Shares are each side's portion of the combined total for that factor. Weights are renormalised across the factors both sides publish — see the methodology. Data read 2026-08-04.

Full United Kingdom dossier →Full United States dossier →Run a war game →

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Neighbour rivalries (473)

Bordering states — the comparisons people actually search for.

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NigeriaEquatorial Guinea v Sao Tome and PrincipeEritrea v EthiopiaEritrea v Saudi ArabiaEritrea v SudanEritrea v YemenEstonia v FinlandEstonia v GermanyEstonia v LatviaEstonia v PolandEstonia v SwedenEswatini v MozambiqueEswatini v South AfricaEthiopia v KenyaEthiopia v SomaliaEthiopia v South SudanEthiopia v SudanEthiopia v YemenFiji v TongaFiji v TuvaluFinland v GermanyFinland v LatviaFinland v LithuaniaFinland v NorwayFinland v SwedenFrance v IrelandFrance v LuxembourgFrance v MonacoFrance v NetherlandsFrance v SwitzerlandFrance v TunisiaFrance v VaticanGabon v NigeriaGabon v Sao Tome and PrincipeGambia v SenegalGeorgia v RussiaGeorgia v TürkiyeGeorgia v UkraineGermany v HungaryGermany v LatviaGermany v LithuaniaGermany v LuxembourgGermany v NetherlandsGermany v NorwayGermany v SerbiaGermany v SwedenGermany v SwitzerlandGhana v NigeriaGhana v TogoGreece v LibyaGreece v MaltaGreece v North MacedoniaGrenada v GuyanaGrenada v St. Kitts and NevisGrenada v St. Vincent and the 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Sts. v PalauMicronesia, Fed. Sts. v Papua New GuineaMoldova v RomaniaMoldova v UkraineMonaco v SpainMongolia v RussiaMontenegro v SerbiaMorocco v PortugalMorocco v SpainMozambique v SeychellesMozambique v South AfricaMozambique v TanzaniaMozambique v ZambiaMozambique v ZimbabweNamibia v South AfricaNamibia v ZambiaNetherlands v NorwayNetherlands v United KingdomNicaragua v PanamaNigeria v Sao Tome and PrincipeNigeria v TogoNorth Macedonia v SerbiaNorway v United KingdomOman v PakistanOman v QatarOman v SomaliaOman v United Arab EmiratesOman v YemenPalau v PhilippinesPapua New Guinea v Solomon IslandsPhilippines v TaiwanPoland v RomaniaPoland v SlovakiaPortugal v SpainQatar v United Arab EmiratesRomania v RussiaRussia v TurkmenistanRwanda v TanzaniaRwanda v UgandaSamoa v TongaSaudi Arabia v United Arab EmiratesSaudi Arabia v YemenSeychelles v TanzaniaSlovakia v UkraineSolomon Islands v VanuatuSomalia v TanzaniaSouth Africa v ZimbabweSouth Sudan v SudanSouth Sudan v UgandaSpain v TunisiaSt. Kitts and Nevis v St. LuciaSt. Lucia v Trinidad and TobagoSudan v UgandaSuriname v Trinidad and TobagoSweden v United KingdomTajikistan v UzbekistanTürkiye v VaticanTurkmenistan v UzbekistanZambia v Zimbabwe