Global Politics Explainer

CWA # 1761
Global Politics Explainer
SIPRI 2025 Report on World Nuclear Forces: Nine Major Trends
US and Russia continue to have the largest nuclear warheads; China is growing the fastest 

Naomi Miriam Mathew 
21 July 2025
Photo Source:

The Stockholm International Peace Research Institute published its report on World Nuclear Forces on June 16, 2025. The report highlights the nuclear modernizing programs of the Nine nuclear states, marking the end of the post-Cold War era arms reduction and the emergence of a technologically advanced arms race.

Globally, the total nuclear warheads is expected to be 12,241, out of which 9,614 are Military stockpiles and 2,627 are retired stockpiles awaiting dismantling. SIPRI also highlights the asymmetry of dismantling retired warheads and the trend of large-scale modernization and expansion of Warheads. America and Russia hold about 90 per cent of the nuclear warheads. 

This report emphasized the onset of a new nuclear arms race among the nine nuclear states. Following are the major trends, according to the SIPRI report.

First, the US holds a stockpile of 5,044 nuclear warheads, out of which nearly 1770 are deployed. According to the report, the US is on an ambiguous nuclear modernization, which includes the replacement of the Minuteman 3 Intercontinental Ballistic missile with a ground-based strategic system, and the development of the Columbia class ballistic missile submarine and the upgradation to B61 gravity bombs and long-range cruise missiles.

Second, Russia holds a stockpile of about 5,580 nuclear warheads, out which nearly 1710 are deployed. Like the US, Russia is also in an arms race to modernize its nuclear forces. Russia is deploying new missile systems like RS-28 Sarmat and modernizing its dual-capable missiles that can carry both nuclear and conventional warheads. Russia’s upgradation of nuclear weapons emphasizes the strategy of deterrence and potential battlefield use, particularly in the context of the Ukraine conflict.

Third,  China is the fastest-growing nuclear state, adding approximately 100 warheads annually since 2023. As per the SIPRI estimate, China has around 600 warheads. This enormous growth is complemented by the construction of 300 new missile silos and modernizing its nuclear triad including sea and air based nuclear systems. With this pace, China is expected to have as many Intercontinental ballistic missiles as Russia and the US by the turn of this decade.

Fourth, France is expected to refurbish and modernize its nuclear program and currently has about 290 nuclear warheads, all of which are active military stockpiles. The deterrence of France is entirely sea-based, which includes four Triomphant-class submarines with M51 SLBMs. France is also expected to modernize its air-based nuclear missile, which includes the development of ASN4G hypersonic air-launch missiles.

Fifth, the UK is to raise its warhead stockpiling from 180 to 260 in 2021, which is a significant policy strike amidst a deteriorating security environment. UK currently has 225 nuclear warheads, out of which 40 are at sea on continuous deterrent patrol. It has developed Dreadnought-class SSBNs and integrated US-developed W93/Mk7 Warheads with British Warheads under a shared Trident nuclear system.

Sixth, India continues to modernize its nuclear program. According to the report, as of January 2025, India has about 180 nuclear heads and is developing a second-strike capability through the nuclear triad of aircraft, land-based missiles and SSBNs. The advancements in air-based missile systems include Agni-P and Agni-V.  India’s nuclear posture is based on a no-first-use policy and its arsenal expansion is based on the perceived threats from both China and Pakistan.

Seventh, Pakistan, according to the report, upgrades to its nuclear development by construction of new delivery systems and accumulation of fissile materials like plutonium and highly enriched uranium can expand over the next decade. Its nuclear stockpiling is closely matching that of India, with approximately 170 warheads. Pakistan continues to develop its nascent triad of aircraft, land-based, and cruise missiles. 

Eighth, North Korea, according to the report, would have accumulated almost 50 warheads and has fissile materials for up to 90 warheads. North Korea continues to conduct nuclear tests, including solid-fuel intercontinental ballistic missiles and submarine missiles, and these activities reinforce its status as a de facto nuclear power.

Ninth, Israel continues to be in a state of absolute nuclear ambiguity, leaving significant ambiguity regarding the number and characteristics of nuclear weapons. As per the estimates of SIPRI as of January 2025, Israel would have around 90 nuclear warheads. As a significant deterrent to countries like Iran, Israel is continuously developing its nuclear capabilities by developing medium-range Jericho missiles and gravity bombs, and enriching plutonium production at NNRC. Despite being a non-signatory of NPT, Israel is considered an advanced undeclared nuclear power.

Major note of the report: Lack of transparency and secrecy in revealing nuclear doctrines
SIPRI report highlights the lack of transparency and non-disclosure policy of nuclear doctrines among the nine nuclear states. Though some countries like US, UK, and France have relatively clear and publicly articulated doctrines, other nuclear states offer limited visibility of their nuclear doctrines. This covertness by countries complicates global efforts for arms control and confidence-building. SIPRI report states that this is partly due to the degradation of control regimes like New START and warns of miscalculations and crisis instability in an already fragile international security environment.

Reference
Stockholm International Peace Research Institute. (2025). World nuclear forces (SIPRI Yearbook 2025 Sample Chapter). Oxford University Press.
https://www.sipri.org/sites/default/files/YB25%2006%20World%20Nuclear%20Forces.pdf

About the Author
Naomi Miriam Mathew is a postgraduate student of International Studies at the Symbiosis School of International Studies, Pune.
 


PREVIOUS COMMENTS

Conflict Weekly
May 2026 | CWA # 2092

NIAS Global Politics Team

The US-Iran War, Week Ten
CW Column on Middle East: Escalating Israeli Aggression in Lebanon I UAE’s Covert Manoeuvres
CW Column
May 2026 | CWA # 2091

Brighty Ann Sarah

Conflicts in the Middle East:
Escalating Israeli Aggression in Lebanon I UAE’s Covert Manoeuvres 
CW Note
May 2026 | CWA # 2090

Brighty Ann Sarah

The US-Iran War, Week Ten:
Fraying Ceasefire, Renewed Negotiations and the Risk of a Stalemate
TWTW Takeaways
May 2026 | CWA # 2088

Nithin V

King Charles's US Visit: 
Emphasis on strong bilateral relations, democratic values and security cooperation
TWTW Note
May 2026 | CWA # 2086

Aishal Hab Yousuf

UAE’s Exit from OPEC: 
Implications for the Middle East and the Energy Market
CW Note
May 2026 | CWA # 2083

Brighty Ann Sarah

The US-Iran War, Week Nine:
Deadlocked Negotiations, Competing Agendas and Domestic Pressure
CW Note
May 2026 | CWA # 2082

Akshath Kaimal

Escalating Violence in Mali:
Between Ethnic Insurgencies, Jihadist Attacks, and Military Coups
CW Note
April 2026 | CWA # 2074

Brighty Ann Sarah

Israel-Lebanon Ceasefire:
Asymmetric Terms, Fragile Truce and Israeli Occupation
CW Note
April 2026 | CWA # 2073

Akshath Kaimal

The US-Iran War, Week Eight:
A Fragile Ceasefire, Attempts to Control Hormuz and the Stalled Talks in Islamabad
Special Commentary
April 2026 | CWA # 2072

Anu Maria Joseph

Three Years of War in Sudan
Prolonged Stalemate, Humanitarian Cost, External Interventions and Regional Fallouts
Peace and Conflicts This Quarter (January–March 2026)
April 2026 | CWA # 2069

Padmashree Anandhan

The War in Ukraine
Expanding Drone Warfare, Russia's Strategic Patience and Ukraine's Diplomatic Outreach
Peace and Conflicts This Quarter (January–March 2026)
April 2026 | CWA # 2068

Femy Francis 

China-Japan Tensions
Escalating Defence Posturing and Economic Decoupling
Peace and Conflicts This Quarter (January–March 2026)
April 2026 | CWA # 2067

Anu Maria Joseph

Conflicts in Africa
Continuing Conflicts in Sudan, South Sudan and DR Congo, Security issues in Nigeria, and Political Instability in Madagascar
Peace and Conflicts This Quarter (January–March 2026)
April 2026 | CWA # 2066

Akshath Kaimal

The Pakistan-Afghanistan Conflict
Recurrent Clashes, Defiant Taliban, Contesting Narratives and Emerging China’s Role
The World This Quarter 
April 2026 | CWA # 2065

Lakshmi Venugopal Menon

The Middle East (Jan–Mar 2026):
The US-Iran War, Israel-Hamas Conflict and their interconnected fallouts
The World This Quarter 
April 2026 | CWA # 2064

Anwesha Ghosh

Afghanistan (Jan–Mar 2026):
Gender Repression, Leadership Rifts, Regional Realignments and Clashes with Pakistan
The World This Quarter 
April 2026 | CWA # 2063

Ramya B

Russia (Jan-Mar 2026)
Assertive Military Posture, Attempts for an Economic Turnaround and Search for Partners
The World This Quarter 
April 2026 | CWA # 2062

Himani Pant

Europe (Jan-Mar 2026)
Trade diversification & FTAs, Increased defence spending, Tightening irregular migration and Economic slowdown
The World This Quarter 
April 2026 | CWA # 2061

S Shaji

Africa (Jan-Mar 2026)
Elections, Civil Wars, Militancy and Peace Initiatives
The World This Quarter 
April 2026 | CWA # 2059

Adarsh Vijay

India and the World (Jan-Mar 2026)
Maintaining Strategic Autonomy, Balancing the US relations and Resetting the China ties 
The World This Quarter 
April 2026 | CWA # 2058

Nishchal N Pandey  & Mahesh Raj Bhatta

Nepal (Jan-Mar 2026)
Political Upheaval, Generational Change and Economic Uncertainty
The World This Quarter 
April 2026 | CWA # 2057

Bibhu Prasad Routray

Myanmar (Jan-Mar 2026)
An Illegitimate Regime’s Consolidation Game
The World This Quarter
April 2026 | CWA # 2056

Ashik J Bonofer

Southeast Asia (Jan-Mar 2026)
Deteriorating situation in Myanmar, Philippines as the ASEAN Chair, New government in Thailand, and Economic & Environmental challenges
The World This Quarter 
April 2026 | CWA # 2055

Haans J Freddy

East Asia (Jan-Mar 2026)
China’s military operations near Taiwan, Japan-China tensions and South Korea’s security challenges
The World This Quarter
April 2026 | CWA # 2052

Shreya Upadhyay

The United States (Jan-Mar 2026)
Tariffs, Ukraine, Iran and Operationalization of Trump’s World Order
March 2026 | CWA # 2039

Femy Francis

Trump-Xi Meeting
Why did Trump reschedule it? What does that mean?
March 2026 | CWA # 2035

Akshath Kaimal

Pakistan-Afghanistan Conflict
Broken ceasefire, Expanding military strikes and Worsening humanitarian situation
Global Politics Early Bird
March 2026 | CWA # 2033

Mahesh Bhatta

Nepal after elections:
Five major challenges for the new government
March 2026 | CWA # 2024

Lekshmi MK

The UN and the Iran-US War
UNSC Resolution 2817 between “Clear and Unified Message” and “Manifest Injustice”
March 2026 | CWA # 2023

Femy Francis

China’s Two Sessions 2026
New Five-Year Plan, Ethnic Unity Law, and an Enhanced Defence Budget
March 2026 | CWA # 2019

Akshath Kaimal

Rising Violence in Nigeria
Limited State Capacity, Multiple Actors, and a Complex Security Environment
March 2026 | CWA # 2012

Padmashree Anandhan

The War in Ukraine
Long-range strikes, Defence adaptation and the EU’s energy dependence
Global Politics Early Bird
March 2026 | CWA # 2010

Mahesh Bhatta

Nepal Elections 2026
The Rise of the “New” and the Fall of the “Old”
March 2026 | CWA # 2009

Sreemaya Nair

Nepal Elections 2026
Rise of a new leadership and Reset in political landscape
February 2026 | CWA # 1998

Anu Maria Joseph

Instability in Sudan
Response to the genocide call and the threats of a regional spillover
PR Commentary
February 2026 | CWA # 1985

Abhimanyu Solanki

Basant in Pakistan
The return of Basant, and what it signifies
February 2026 | CWA # 1977

Anu Maria Joseph

Violence in Nigeria
US military deployment amidst worsening insurgency
February 2026 | CWA # 1976

Lekshmi MK

The War in Ukraine
The Geneva Talks and Growing Negotiation Asymmetry
Pakistan in 2025
December 2025 | CWA # 1971

Vani Vyshnavi Jupudi

Pakistan Budget 2025-26
Legislating stabilisation under IMF discipline and coalition constraints
Pakistan in 2025
December 2025 | CWA # 1970

Aparna A Nair

Pakistan & China
Ten Years of China-Pakistan Economic Corridor (CPEC)
PR Explainer
November 2025 | CWA # 1968

Vani Vyshnavi Jupudi

Pakistan and the US
A New opening, or another cycle?
February 2026 | CWA # 1959

Yesasvi Koganti

UK and China
PM Keir Starmer’s visit and the Recalibration of Economic, Strategic, and Domestic ties
TWTW Note
January 2026 | CWA # 1946

R Preetha

The Davos Summit 2026
Five Major Takeaways from The World Economic Forum
State of Global Politics 2025
December 2025 | CWA # 1931

Padmashree Anandhan

NATO Summit 2025
State of Global Politics 2025
December 2025 | CWA # 1924

Padmashree Anandhan

NATO Summit 2025
This Week in History
August 2025 | CWA # 1801

R Preetha

28 August 1963
Martin Luther King's "I Have a Dream" speech and the Civil Rights Movement in the US
The World This Week
August 2025 | CWA # 1790

GP Team

The World This Week#323-324
The Trump-Putin meeting & the US-China tariff extension
TWTW note
August 2025 | CWA # 1780

Abhiruchi Chowdhury

Trump tariffs:
Weaponization of access to the US economy
The World This Week
August 2025 | CWA # 1779

GP Team

The World This Week#322
US tariffs on India, Brazil and Canada & the EU-US trade deal
This Week in History
August 2025 | CWA # 1778

Lekshmi MK

28 July 1914
Austria-Hungary declares war on Serbia, starting the First World War
Global Politics Explainer
July 2025 | CWA # 1770

Abhiruchi Chowdhury

Pakistan-Afghanistan relations:
Why the focus on terrorism, refugees, and Uzbekistan as the third partner?
The World This Week
July 2025 | CWA # 1769

GP Team

The World This Week#321
Indian PM Modi's visit to the Maldives I Elections to the Upper House in Japan
Global Politics Explainer
July 2025 | CWA # 1762

Lekshmi MK

Ocean Darkening: 
What is the phenomenon? What are its effects? And who are more vulnerable?
Global Politics Explainer
July 2025 | CWA # 1749

R Preetha

Africa as the Hunger Epicenter
Of the 13 Global Hunger Hotspots, 8 are in Africa: Five reasons why
The World This Week
July 2025 | CWA # 1748

GP Team

The World This Week #318
PM Modi’s Visit to Trinidad and Tobago & Ghana, One big beautiful bill, and Quad Foreign Ministers Meeting
Global Politics Explainer
July 2025 | CWA # 1744

Chittrothu Vaihali

EU-Canada Summit 2025
What is security and defence partnership all about?
Conflict Weekly
July 2025 | CWA # 1742

IPRI Team

Conflict Weekly # 287-88
The 12 Day War and the Congo-Rwanda Peace Deal
Global Politics Explainer
July 2025 | CWA # 1738

Fleur Elizabeth Philip

Thailand and Cambodia
What was the phone call between PM Shinawatra and President of Senate Hun Sen? What is the border dispute between the two? Why has this become an issue?
TWTW Note
June 2025 | CWA # 1735

Padmashree Anandhan

NATO Summit 2025:
Trump making Europe great again
The World This Week
June 2025 | CWA # 1734

GP Team

The World This Week #317
NATO Summit 2025 and Russia-Mali bilateral agreements
Global Politics Explainer
June 2025 | CWA # 1733

Ananya Dinesh

China and the Pacific Islands 
What was the recent China-PIC joint statement about? What it says, and what it means?
TWTW Note
June 2025 | CWA # 1728

M Kejia

G7 Summit 2025:
The Focus on the Middle East and Trade negotiations
TWTW Note
June 2025 | CWA # 1727

Aparna A Nair

Second China-Central Asia Summit:
China’s continuing search for regional partners, and the emphasis on the BRI
The World This Week
June 2025 | CWA # 1726

GP Team

The World This Week #316
China-Central Asia Summit in Kazakhstan, and the G7 Summit in Canada
Global Politics Explainer
June 2025 | CWA # 1725

Brighty Ann Sarah, R Preetha, Santhiya M, Aparna A Nair & M Kejia

Operation Midnight Hammer: US bombs three nuclear sites in Iran
What were the three Iranian nuclear sites that were targeted? What are the B2 Bombers and Bunker Buster Bombs? What do these attacks mean? What Next?
Conflict Weekly
June 2025 | CWA # 1724

IPRI Team

Conflict Weekly #286
The Spiralling Israel-Iran Crisis, and the Dangerous Hunger Hotspots
Global Politics Explainer
June 2025 | CWA # 1721

Rizwana Banu S and Santhiya M

Who are the Afrikaners?
Why is Trump interested in the Afrikaner question in South Africa?
Global Politics Explainer
June 2025 | CWA # 1720

Lekshmi MK

New WMO Report on Arctic Warming
What are the social, economic and environmental implications of Arctic warming
Global Politics Explainer
June 2025 | CWA # 1719

J Yamini  

China’s EV Surge
What contributes to the rise of BYD
Global Politics Explainer
June 2025 | CWA # 1717

J Yamini

Gender Violence in Pakistan:
What are the larger issues in the Noor Mukadam case?
TWTW Note
June 2025 | CWA # 1715

Femy Francis

The US-China:
On Tariffs, Rare Earths and Visas
The World This Week
June 2025 | CWA # 1713

GP Team

The World This Week #315
The UN Ocean Conference in France and the US-China Meeting in London
Conflict Weekly
June 2025 | CWA # 1709

IPRI Team

Conflict Weekly #284-285
Cambodia-Thailand Border Tensions, Protests in the US, and the Indigenous Māori question in New Zealand
The World This Week
June 2025 | CWA # 1705

GP Team

The World This Week #314
Elections in South Korea and Poland I China and the Pacific Island Countries I Bangladesh Election Announcement 2026
Global Politics Explainer
June 2025 | CWA # 1703

M Kejia 

Sagarmatha Sambaad in Nepal
Kathmandu’s Global Agenda for the Himalayas
Global Politics Explainer
June 2025 | CWA # 1700

R Preetha

Ethiopia bans the TPLF
What does the TPLF ban mean for the Pretoria agreement? What next for Ethiopia?
TWTW Note
June 2025 | CWA # 1694

Aashish Ganeshan

The US:
Harvard vs Trump Administration
The World This Week
June 2025 | CWA # 1691

GP Team

The World This Week #313
China-ASEAN-GCC Summit I President Macron's visit to South East Asia I Trump Vs Harvard
The World This Week
May 2025 | CWA # 1690

GP Team

The World This Week #312
Elections in Romania, Portugal & Poland I UK-EU Summit
CW Note
May 2025 | CWA # 1689

Padmashree Anandhan

Ukraine
Continuing Russia’s Aerial Attacks, despite exchange of prisoners
CW Note
May 2025 | CWA # 1688

Ayan Datta

Gaza
The Humanitarian Crisis and Israel’s Renewed Offensive
TWTW Note
May 2025 | CWA # 1685

Aparna A Nair

UK-EU Summit:
First step towards a reset
TWTW Note
May 2025 | CWA # 1683

Aashish Ganeshan

Elections in Portugal:
The Rise of Chega Party and the Search for Political Stability
TWTW Note
May 2025 | CWA # 1679

Aashish Ganeshan

US in the Middle Easr
Trump’s visit to Saudi Arabia, Qatar and UAE
TWTW Note
May 2025 | CWA # 1678

Gauri Gupta

China in Latin America
China-CELAC forum: Strengthening ties with Latin America and Caribbean
The World This Week
May 2025 | CWA # 1677

GP Team

The World This Week #310-311
China in Latin America and the Carribbean I Trump's Middle East Visit I Denmark as the new Arctic Chair
CW Note
May 2025 | CWA # 1675

Lekshmi MK

Turkey:
PKK disbands after 40 years of armed insurgency
CW Note
May 2025 | CWA # 1673

Padmashree Anandhan

Ukraine:
The Discussion in Turkiye and the Elusive Ceasefire
CW Note
May 2025 | CWA # 1672

D Suba Chandran

India and Pakistan:
De-escalation and the “New Normal”
CW Note
May 2025 | CWA # 1671

Abhiruchi Chowdhury

US, Ukraine and Russia:
Air attacks amidst a Minerals deal and Ceasefire Proposals
Global Politics Early Bird
May 2025 | CWA # 1670

Fleur Elizabeth Philip

Singapore Elections in 2025:
People’s Action Party (PAP) Wins, Again
TWTW Note
May 2025 | CWA # 1667

R Preetha and Brighty Ann Sarah

East Asia:
Tough Tariff Negotiations with the US
TWTW Note
May 2025 | CWA # 1666

Padmashree Anandhan

The US-Ukraine
The mineral deal with the US
Conflict Weekly
May 2025 | CWA # 1665
Conflict Weekly # 280-81
India-Pakistan De-escalation I Ukraine Discussion in Istanbul I The Battle over Port Sudan I Disbanding of PKK in Turkiye I France-Algeria Diplomatic Tensions
Global Politics Early Bird
May 2025 | CWA # 1663

R Preetha

Canada Elections 2025:
What do the results convey? What next for Mark Carney?
NIAS Global Politics Database
March 2024 | CWA # 1251

NIAS Africa Team

Africa This Week
NIAS Global Politics Database
February 2024 | CWA # 1226

NIAS Africa Team

Africa This Week
The War in Ukraine
October 2023 | CWA # 1091

Annem Naga Bindhu Madhuri

Issues for Europe
IPRI Quarterly Forecasts I Triggers, Trends, and Trajectories
July 2023 | CWA # 1012

Bibhu Prasad Routray

Myanmar continues to burn
2022: The World This Year
December 2022 | CWA # 879

Padmashree Anandhan

The Ukraine War
Europe: Heatwaves, Wildfires, Droughts, and Ice Melt in Alps
November 2022 | CWA # 838

Rishma Banerjee

Tracing Europe's droughts
NIAS Africa Weekly
March 2022 | CWA # 705

NIAS Africa Team

In Focus: Libya
The World This Week: 150th Issue
December 2021 | CWA # 630

GP Team

Europe in 2021
Pakistan Reader
October 2021 | CWA # 588

Abigail Miriam Fernandez

TLP is back again
NIAS Fortnightly on Science, Technology & International Relations
August 2021 | CWA # 528

STIR Team

Space Tourism
Science, Technology and International Relations
September 2019 | CWA # 162

Lakshman Chakravarthy N

5G: A Primer
South Asia Monthly Brief (Nov 2018)
December 2018 | CWA # 71

Mahesh Bhatta

Nepal
South Asia Monthly Brief (Nov 2018)
December 2018 | CWA # 70

Nasima Khatoon

The Maldives
South Asia Monthly Brief (Nov 2018)
December 2018 | CWA # 69

Harini Madhusudan

India
South Asia Monthly Brief (Nov 2018)
December 2018 | CWA # 68

Sourina Bej

Bangladesh
South Asia Monthly Brief (Nov 2018)
December 2018 | CWA # 67

Seetha Lakshmi Dinesh Iyer

Afghanistan