CONFLICTIQ
HEAD TO HEAD

Bulgaria vs Serbia

Bulgaria
55%
RAI
Serbia
45%

Verdict

Bulgaria holds a 55–45 advantage over Serbia on the Relative Advantage Index.

The margin is driven by economic size (GDP) (56% of the combined total, $113bn) and logistics & power projection (64% of the combined total, 9). Serbia leads on military spending.

1 factor — nuclear warheads — could not be scored because the figure is unpublished for at least one side.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

FactorBulgariaShareSerbiaWeight
Military spending
SIPRI Milex
$2.6bn
48%52%
$2.8bn33%
Economic size (GDP)
World Bank WDI
$113bn
56%44%
$90.1bn27%
Active personnel
COW NMC
37.0k
57%43%
28.0k20%
Logistics & power projection
OurAirports
9
64%36%
520%

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 Bulgaria dossier →Full Serbia dossier →Run a war game →

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