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Coalition Builder

Coalition Strength: CSTO vs NATO

+1 CSTO — 6 countries +27 NATO — 32 countries
Combined Military Strength
CSTO NATO
Combined Military Index 83.3 99.4
Member states 6 32
Active military personnel 1,248,850 3,316,410
– Reserve troops 2,019,500 2,329,650
Military aircraft 4,790 20,282
– incl. combat aircraft 1,712 5,175
Military ships 446 2,261
– incl. aircraft carriers 0 16
– incl. submarines 60 145
Main battle tanks 6,969 11,487
Nuclear warheads 5,459 5,637
Combined defense budget $158.5 billion $1.5 trillion
Combined Forces Chart

Overview

CSTO groups 6 countries against 32 for NATO. NATO fields 3,316,410 active troops combined — 2.7x CSTO's 1,248,850. NATO's combined $1536B defense budget is 9.7x that of CSTO ($159B).

In the air, CSTO musters 4,790 military aircraft (1,712 combat) against 20,282 (5,175 combat) for NATO. At sea, the fleets total 446 ships for CSTO and 2,261 for NATO, including 60 and 145 submarines respectively. On the ground, CSTO deploys 6,969 main battle tanks vs 11,487 for NATO.

Both blocs hold nuclear weapons: CSTO's members maintain 5,459 warheads and NATO's hold 5,637.

Combined Military Index

Country ranking →
CSTO 6 members
83.3/ 100
Six-pillar composite scored as one force: summed manpower, ground, naval and air points, combined nuclear deterrent and pooled defense budget, with a readiness modifier from budget per soldier.
Pillar Weight Score Basis
Manpower 15% 97.7 2,475,350 effective
Ground forces 20% 85.2 6,969 main battle tanks
Naval power 20% 83.9 446 ships, weighted by type
Air power 25% 88.2 4,790 aircraft, weighted by type & age
Nuclear deterrent 10% 100.0 5,459 warheads
Defense budget 10% 90.2 $159B combined, PPP-adjusted
Readiness modifier ×1.08 Budget per soldier
NATO 32 members
99.4/ 100
Six-pillar composite scored as one force: summed manpower, ground, naval and air points, combined nuclear deterrent and pooled defense budget, with a readiness modifier from budget per soldier.
Pillar Weight Score Basis
Manpower 15% 100.0 4,704,870 effective
Ground forces 20% 100.0 11,487 main battle tanks
Naval power 20% 100.0 2,261 ships, weighted by type
Air power 25% 100.0 20,282 aircraft, weighted by type & age
Nuclear deterrent 10% 100.0 5,637 warheads
Defense budget 10% 100.0 $1536B combined, PPP-adjusted
Readiness modifier ×1.17 Budget per soldier

Combined scores treat each coalition as a single force: raw pillar values (troops, weighted equipment points, warheads, budgets) are summed across members and re-scored on the Global Military Index scale. Alliance cohesion, geography and logistics are not modeled.

Forces by Domain

Air Forces by Category
Navies by Category
Ground Forces by Category
Ground inventories cover 4/6 and 23/32 members respectively.
Combined Defense Spending ($B)
Combined Personnel Evolution
Who Pays: CSTO
Who Pays: NATO

Member Forces

CSTO 6 members
Collective Security Treaty Organization (6)
Country GMI Troops Aircraft Ships Budget
🇷🇺 Russia ☢ 82.6 1,100,000 4,300 446 96%
🇧🇾 Belarus 35.5 45,350 205 — 1%
🇰🇿 Kazakhstan 30.8 39,000 181 — 2%
🇦🇲 Armenia 27.6 44,800 69 — 1%
🇰🇬 Kyrgyzstan 20.9 10,900 9 — 0%
🇹🇯 Tajikistan 18.9 8,800 26 — 0%
NATO 32 members
North Atlantic Treaty Organization (32)
Country GMI Troops Aircraft Ships Budget
🇺🇸 United States ☢ 99.8 1,326,050 12,784 234 60%
🇫🇷 France ☢ 64.1 270,000 988 164 4%
🇬🇧 United Kingdom ☢ 62.1 144,400 640 65 6%
🇹🇷 Turkey 57.8 355,200 1,067 192 2%
🇩🇪 Germany 57.7 183,500 589 71 7%
🇮🇹 Italy 56.3 165,500 743 311 3%
🇪🇸 Spain 52.9 120,350 471 78 2%
🇬🇷 Greece 51.0 142,700 648 154 0%
🇵🇱 Poland 50.2 114,050 449 45 3%
🇨🇦 Canada 49.7 67,400 355 66 3%
🇸🇪 Sweden 46.2 29,750 170 319 1%
🇳🇴 Norway 45.2 23,250 111 60 1%
🇳🇱 Netherlands 44.7 35,400 124 40 2%
🇫🇮 Finland 44.3 23,800 164 200 1%
🇩🇰 Denmark 42.8 14,500 123 127 1%
🇷🇴 Romania 41.2 69,300 166 33 1%
🇧🇪 Belgium 37.8 26,300 104 9 1%
🇵🇹 Portugal 37.2 27,250 86 36 0%
🇧🇬 Bulgaria 34.6 36,950 79 20 0%
🇭🇷 Croatia 33.0 15,200 67 29 0%
🇭🇺 Hungary 30.5 27,800 86 — 0%
🇨🇿 Czechia 28.8 21,750 104 — 0%
🇸🇰 Slovakia 25.7 15,850 51 — 0%
🇸🇮 Slovenia 21.6 7,250 39 — 0%
🇦🇱 Albania 19.8 8,500 19 — 0%
🇲🇰 North Macedonia 17.4 8,000 20 — 0%
🇱🇹 Lithuania 15.4 19,850 11 — 0%
🇪🇪 Estonia 14.7 7,100 5 8 0%
🇱🇻 Latvia 12.8 6,210 7 — 0%
🇲🇪 Montenegro 10.5 2,350 11 — 0%
🇱🇺 Luxembourg 9.0 900 1 — 0%
🇮🇸 Iceland 1.8 0 — — 0%

Economy & Geography

Combined Economy
CSTO NATO
Population 194.1 million 980.7 million
Combined GDP $2.6 trillion $54.9 trillion
GDP per capita $13,389 $55,982
Defense share of GDP 6.1% 2.8%
Land area 19,642,663 km² 25,897,183 km²
Coastline 37,653 km 382,102 km
Nuclear Forces
CoalitionCountryStatusWarheadsDeployed
CSTO 🇷🇺 Russia Active 5,459 1,718
CSTO 🇧🇾 Belarus Host — 50
NATO 🇺🇸 United States Active 5,042 1,770
NATO 🇫🇷 France Active 370 280
NATO 🇬🇧 United Kingdom Active 225 120
NATO 🇹🇷 Turkey Host — 50
NATO 🇩🇪 Germany Host — 20
NATO 🇮🇹 Italy Host — 40
NATO 🇳🇱 Netherlands Host — 22
NATO 🇧🇪 Belgium Host — 20
Hosted warheads (NATO sharing) remain with their owner state and are not double-counted in coalition totals.
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Frequently Asked Questions

Who is stronger, CSTO or NATO?

On the combined Global Military Index, NATO scores 99.4 against 83.3 for CSTO. The score aggregates each bloc's manpower, ground, naval, air, nuclear and budget pillars as if it fought as a single force — it ignores geography, cohesion and logistics, which decide real wars.

How many troops do CSTO and NATO have?

CSTO fields 1,248,850 active military personnel across 6 member states, plus 2,019,500 reserves. NATO fields 3,316,410 active personnel and 2,329,650 reserves.

How much do CSTO and NATO spend on defense?

Combined defense spending reaches $159B a year for CSTO and $1536B for NATO, summing each member's latest reported military budget.

Who has more military aircraft, CSTO or NATO?

CSTO operates 4,790 military aircraft (1,712 combat aircraft), while NATO operates 20,282 (5,175 combat). Each member is counted at its most recent inventory year in the GlobalMilitary.net database.

Do CSTO or NATO have nuclear weapons?

Yes — both. CSTO's nuclear-armed members hold 5,459 warheads combined, against 5,637 for NATO. Only warheads owned by member states are counted; hosted weapons remain with their owner.