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Coalition Strength: CSTO vs NATO

+1 CSTO — 6 countries +27 NATO — 32 countries
Combined Military Strength
CSTO NATO
Combined ATLAS Index 84.6 100.0
Member states 6 32
Active military personnel 1,248,850 3,316,410
– Reserve troops 2,019,500 2,329,650
Military aircraft 5,873 21,161
– incl. combat aircraft 1,712 5,173
Military ships 456 2,121
– incl. aircraft carriers 0 15
– incl. submarines 60 140
Main battle tanks 6,969 11,487
Nuclear warheads 5,420 5,637
Combined defense budget $159B $1.5T
Combined Forces Chart

Overview

CSTO groups 6 countries against 32 for NATO. NATO fields 3,316,410 active troops combined — 2.7:1 CSTO's 1,248,850. NATO's combined $1.5T defense budget is 9.7:1 that of CSTO ($159B).

In the air, CSTO musters 5,873 military aircraft (1,712 combat) against 21,161 (5,173 combat) for NATO. At sea, the fleets total 456 ships for CSTO and 2,121 for NATO, including 60 and 140 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 5,420 warheads and NATO's hold 5,637.

Combined ATLAS Index

Country ranking →
CSTO 6 members
84.6/ 100
Six-pillar composite scored as one force: summed manpower, ground, naval and air points, combined nuclear deterrent and pooled defense budget, each conventional pillar read after the availability proxy of its branch (pooled budget per point of the force).
Pillar Weight Score Basis
Manpower 10% 97.9 2,475,350 effective
Ground forces 20% 82.2 6,969 main battle tanks
Naval power 20% 82.8 456 ships — the members' SEAS inventory power
Air power 25% 75.8 5,873 aircraft — the members' AIRS inventory power
Nuclear deterrent 10% 100.0 5,420 warheads
Defense budget 15% 79.1 $159B combined, PPP-adjusted
Availability modifier ground ×1.17 · naval ×1.02 · air ×1.03 Pooled budget per point of each force
NATO 32 members
100.0/ 100
Six-pillar composite scored as one force: summed manpower, ground, naval and air points, combined nuclear deterrent and pooled defense budget, each conventional pillar read after the availability proxy of its branch (pooled budget per point of the force).
Pillar Weight Score Basis
Manpower 10% 100.0 4,704,870 effective
Ground forces 20% 100.0 11,487 main battle tanks
Naval power 20% 100.0 2,121 ships — the members' SEAS inventory power
Air power 25% 100.0 21,161 aircraft — the members' AIRS inventory power
Nuclear deterrent 10% 100.0 5,637 warheads
Defense budget 15% 100.0 $1.5T combined, PPP-adjusted
Availability modifier ground ×1.20 · naval ×1.04 · air ×1.03 Pooled budget per point of each force

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 ATLAS 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 24/32 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 ATLAS Troops Aircraft Ships Budget
🇷🇺 Russia ☢ 82.8 1,100,000 5,378 447 96%
🇰🇿 Kazakhstan 26.4 39,000 186 9 2%
🇧🇾 Belarus 25.7 45,350 205 — 1%
🇦🇲 Armenia 20.5 44,800 69 — 1%
🇰🇬 Kyrgyzstan 14.7 10,900 9 — 0%
🇹🇯 Tajikistan 12.3 8,800 26 — 0%
NATO 32 members
North Atlantic Treaty Organization (32)
Country ATLAS Troops Aircraft Ships Budget
🇺🇸 United States ☢ 100.0 1,326,050 13,004 233 60%
🇫🇷 France ☢ 56.3 270,000 1,017 166 4%
🇬🇧 United Kingdom ☢ 52.5 144,400 673 62 6%
🇹🇷 Turkey 51.0 355,200 1,357 195 2%
🇩🇪 Germany 47.7 183,500 657 72 7%
🇮🇹 Italy 45.7 165,500 778 313 3%
🇬🇷 Greece 41.9 142,700 722 142 0%
🇪🇸 Spain 41.6 120,350 509 87 2%
🇵🇱 Poland 39.9 114,050 479 44 3%
🇨🇦 Canada 37.6 67,400 360 33 3%
🇳🇱 Netherlands 34.3 35,400 146 37 2%
🇷🇴 Romania 32.9 69,300 166 33 1%
🇳🇴 Norway 32.4 23,250 111 60 1%
🇫🇮 Finland 32.1 23,800 164 185 1%
🇸🇪 Sweden 31.9 29,750 178 232 1%
🇩🇰 Denmark 30.8 14,500 123 109 1%
🇵🇹 Portugal 27.5 27,250 100 34 0%
🇧🇪 Belgium 26.9 26,300 107 9 1%
🇧🇬 Bulgaria 26.0 36,950 79 36 0%
🇭🇷 Croatia 23.9 15,200 67 31 0%
🇭🇺 Hungary 21.5 27,800 86 — 0%
🇨🇿 Czechia 20.5 21,750 114 — 0%
🇸🇰 Slovakia 18.3 15,850 51 — 0%
🇱🇹 Lithuania 17.5 19,850 11 — 0%
🇸🇮 Slovenia 14.8 7,250 39 — 0%
🇪🇪 Estonia 13.4 7,100 5 8 0%
🇦🇱 Albania 12.7 8,500 19 — 0%
🇲🇰 North Macedonia 11.2 8,000 20 — 0%
🇱🇻 Latvia 9.6 6,210 7 — 0%
🇱🇺 Luxembourg 6.9 900 1 — 0%
🇲🇪 Montenegro 6.7 2,350 11 — 0%
🇮🇸 Iceland 0.0 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 5,420 1,796
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 — 20
NATO 🇩🇪 Germany Host — 15
NATO 🇮🇹 Italy Host — 35
NATO 🇳🇱 Netherlands Host — 15
NATO 🇧🇪 Belgium Host — 15
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 ATLAS Index, NATO scores 100.0 against 84.6 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 $1.5T for NATO, summing each member's latest reported military budget.

Who has more military aircraft, CSTO or NATO?

CSTO operates 5,873 military aircraft (1,712 combat aircraft), while NATO operates 21,161 (5,173 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 5,420 warheads combined, against 5,637 for NATO. Only warheads owned by member states are counted; hosted weapons remain with their owner.