HEAD TO HEAD

Belgium vs United Kingdom

Verdict

United Kingdom holds a 87–13 advantage over Belgium on the Relative Advantage Index, a decisive margin.

The margin is driven by military spending (86% of the combined total, $89.0bn) and economic size (GDP) (85% of the combined total, $3.7tn).

1 factor — nuclear warheads — could not be scored because the figure is unpublished for at least one side. Those factors are excluded and the remaining weights renormalised, never substituted.

Factor by factor

FactorBelgiumShareUnited KingdomWeight
Military spending
SIPRI Milex
$14.5bn
14%86%
$89.0bn33%
Economic size (GDP)
World Bank WDI
$671bn
15%85%
$3.7tn27%
Active personnel
COW NMC
23.0k
13%87%
150.0k20%
Logistics & power projection
OurAirports
18
6%94%
27220%

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 2026-10-22.

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