SIPRI deployed nuclear-warhead shares by state, January 2025.
Deployed nuclear warheads are compared by state for January 2025 using SIPRI’s nuclear-forces assessment. The composition uses five state entries whose deployed-warhead counts sum to 3,912 and are expressed as shares of that total. The United States led with 1,770 deployed warheads, or 45.2%, ahead of Russia at 1,718, or 43.9%. The United States and Russia together accounted for 89.2% of deployed warheads in this source frame.
| Rank | Entry | Value | Period |
|---|---|---|---|
| 1 | U.S. | 45.2% | January 2025 |
| 2 | Russia | 43.9% | January 2025 |
| 3 | France | 7.2% | January 2025 |
| 4 | UK | 3.1% | January 2025 |
| 5 | China | 0.6% | January 2025 |
Source 1: SIPRI Yearbook 2025 — World nuclear forces
Publisher: SIPRI
Dataset/table: World nuclear forces · SIPRI Yearbook 2025
Units: deployed warheads
Date checked: 2026-05-26
Evidence: Provides deployed-warhead values and the 3,912 total for January 2025.
Deployed warheads are warheads placed on missiles or located on bases with operational forces. SIPRI marks some states as nil or negligible for deployed warheads. SIPRI describes nuclear-warhead figures as approximate assessments based on public information.
Use SIPRI deployed-warhead counts and compute segment shares against SIPRI’s deployed total of 3,912 warheads.
All rows use the same SIPRI Yearbook 2025 summary table, period and unit.
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