India holds a 72–28 advantage over Spain on the Relative Advantage Index, a decisive margin.
The margin is driven by military spending (70% of the combined total, $92.1bn) and economic size (GDP) (69% of the combined total, $3.9tn).
1 factor — nuclear warheads — could not be scored because the figure is unpublished for at least one side.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 | India | Share | Spain | Weight |
|---|---|---|---|---|
Military spending SIPRI Milex | $92.1bn | 70%30% | $40.2bn | 33% |
Economic size (GDP) World Bank WDI | $3.9tn | 69%31% | $1.7tn | 27% |
Active personnel COW NMC | 1.5m | 92%8% | 124.0k | 20% |
Logistics & power projection OurAirports | 146 | 58%42% | 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.