Spain holds a 58–42 advantage over Poland on the Relative Advantage Index.
The margin is driven by economic size (GDP) (65% of the combined total, $1.7tn) and logistics & power projection (74% of the combined total, 107). Poland 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1 factor — nuclear warheads — could not be scored because the figure is unpublished for at least one side.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 | Poland | Share | Spain | Weight |
|---|---|---|---|---|
Military spending SIPRI Milex | $46.8bn | 54%46% | $40.2bn | 33% |
Economic size (GDP) World Bank WDI | $918bn | 35%65% | $1.7tn | 27% |
Active personnel COW NMC | 114.0k | 48%52% | 124.0k | 20% |
Logistics & power projection OurAirports | 37 | 26%74% | 107 | 20% |
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.
Every combination inside the top 30 of the Composite Power Index.
Bordering states — the comparisons people actually search for.