The 9 Countries with the Largest Nuclear Arsenals in the World Today

France has significantly expanded its nuclear deterrence efforts, signaling a strong warning to Russia amid the rising tensions across Europe. Western nations fear that nuclear weapons might be part of Russia’s strategy if its military campaign in Ukraine falters. The main goal of France's nuclear tests is to enhance its nuclear weapons capability, develop, modernize, and test warheads, improve safety protocols for warhead designs, maintain its nuclear industry, and upgrade testing and production facilities for new warheads.

France currently operates SSBNs such as Le Triomphant, Le Téméraire, Le Vigilant, and Le Terrible, commissioned between 1997 and 2010. Each can carry 16 M51.2 submarine-launched ballistic missiles (SLBMs). Two additional SSBNs have left the Île Longue base to join other submarines on patrol in the Atlantic Ocean. Usually, France deploys just one SSBN for patrols. Despite stating that these missiles will not be used in “normal circumstances,” France ensures a constant state of nuclear deterrence amid growing security instability in Europe.

France's nuclear forces rely primarily on the navy and air force, with a focus on strategic regions from Europe to the Mediterranean, the Gulf, and the Indian Ocean. The primary aim of its nuclear tests remains to strengthen France’s nuclear weapons capabilities, test and modernize warheads, assess the effectiveness of detonations, and maintain an efficient nuclear weapon production and testing infrastructure.

In the early 1960s, the UK's nuclear forces were primarily based on strategic bombers, known as the 'V-Force,' which included the Avro Vulcan, Handley Page Victor, and Vickers Valiant. According to research by the UK Ministry of Defence, like France, the UK would need at least five ballistic missile submarines (SSBNs) to maintain an effective nuclear deterrent. This number was later reduced to four.

Seeking a greater role in nuclear matters, the UK announced last year that it would increase its Trident warhead stockpile by 40%, bringing the total to 260 warheads. This marked the first increase since the end of the Cold War. In the 1990s, RAF Lakenheath housed 33 underground bunkers with 110 B61 bombs. Since the US moved its weapons in 2008, ending over half a century of nuclear storage in the UK, these bunkers have been inactive. At that time, many believed that the B61 gravity bomb was outdated, hoping nuclear powers would phase it out. The UK Ministry of Defence has yet to comment on upgrading the weapon storage referenced in the US budget. A UK official stated, 'We will not provide any information on this matter as it pertains to nuclear weapons storage.'

Initially, each missile was equipped with a single warhead from the UK. However, the improved version, the Polaris A-3TK, replaced the single warhead with two Chevaline warheads, along with penetration aids. At any given time, dozens of UK nuclear missiles are ready to launch within minutes of warning. Although the UK's nuclear deterrent is not as powerful as the US's, the Royal Navy’s SSBNs maintain the ability to prevent any surprise attack and carry out missions to protect the nation for centuries from the sea.

After Pakistan conducted its first nuclear test on May 28, 1998, schoolchildren across the country celebrated by singing and dancing. Towns and cities raised Pakistan's flags to commemorate the event. It was a moment of pride for a nation with a struggling economy, facing sanctions and strict U.S. arms control measures. Along with photos of then Prime Minister Nawaz Sharif, Dr. Abdul Qadeer Khan, the 'father' of Pakistan's nuclear program, was hailed as a national hero. For decades, Pakistan has been a nuclear power, and it is now working to establish its own nuclear triad, creating a powerful nuclear arsenal capable of executing a devastating retaliatory strike.

Pakistan began acquiring the necessary fuel for nuclear weapons, enriching uranium and plutonium. Benazir Bhutto later declared that Pakistan's bombs remained unassembled until 1998, when India tested six bombs within three days. Nearly three weeks later, Pakistan followed suit, conducting a rapid series of tests with five bombs in one day and a sixth three days later. Pakistan's growing nuclear arsenal is now controlled by the military's Strategic Plans Division and is mainly located in the Punjab province. Islamabad asserts that these weapons are well-protected and unlikely to be used recklessly.

According to the Stockholm International Peace Research Institute (SIPRI) in Sweden, Pakistan's stockpile was estimated to be between 140 and 150 nuclear warheads last year, while India's was between 130 and 140. The Carnegie Endowment for International Peace and the Stimson Center, both based in the U.S., assessed in 2015 that Pakistan could produce 20 bombs per year, meaning the country could quickly become the world's third-largest nuclear power, behind only the U.S. and Russia. Furthermore, according to Reuters, Pakistan is developing sea-launched cruise missiles to complete its 'nuclear triad,' which would give it the ability to launch nuclear strikes from land, air, and sea. India achieved this capability last year with the commissioning of the INS Arihant, a nuclear-powered ballistic missile submarine. This development highlights the ongoing nuclear arms race between India and Pakistan, which could lead to a catastrophic outcome if relations between the two countries do not improve in the near future. Experts argue that the region urgently needs a nuclear arms control agreement to keep things under control.

India began developing the Agni-3 long-range ballistic missile with a two-stage propulsion system in 2001. The missile was expected to have high mobility and quick deployment and recovery times. However, the development of Agni-3 did not meet expectations. India conducted a test launch of the Agni-3 missile, which was initially deemed successful, but sources later reported that the missile fell shortly after launch.

India's missile arsenal is large and diverse, with plans to soon add an intercontinental ballistic missile (ICBM). India has successfully tested the Agni-V, a medium-range ballistic missile with a range of up to 5,000 km, three times. In addition, India is working on the Agni-VI, which will have a range of 10,000 km. In the future, India is certain to expand its nuclear stockpile. This process will be slower than Pakistan’s due to India’s strategic goal of using nuclear weapons for deterrence and passive retaliation in the event of a nuclear conflict, in stark contrast to Pakistan's approach of using nuclear weapons on the battlefield for tactical strikes. India's nuclear facilities also enable it to produce a variety of nuclear weapons in a shorter time if necessary. India’s nuclear weapons development program has faced criticism, controversy, and international sanctions. India is not a signatory of the Nuclear Non-Proliferation Treaty (NPT) and is not recognized by the treaty as one of the five nuclear-armed nations.

India’s nuclear tests in 1974 and 1998 were met with international condemnation, followed by several rounds of sanctions. However, most of these sanctions were lifted over time, and the United States quietly accepted India’s nuclear status as long as India refrains from further nuclear testing, despite the official U.S. stance of not recognizing India as a nuclear power. It is clear that India is unlikely to give up its nuclear weapons in exchange for Pakistan doing the same. Finding a strategic plan to reconcile and address these complex issues remains a crucial task for India in managing conflicts and ensuring security in the South Asian region.

Israel became a nuclear power in the 1950s, with Prime Minister David Ben-Gurion pushing for the development of an atomic bomb as a defensive measure against Israel's enemies. According to military doctrine, nuclear weapons would be used if conventional warfare failed, or to prevent enemy nations from launching nuclear, chemical, or biological attacks that could threaten the existence of the Jewish state. Shimon Peres, who later became both President and Prime Minister of Israel, cultivated a relationship with France, which provided a large heavy-water reactor and an underground plutonium reprocessing plant. The reactor, located in Dimona in the Negev Desert, transformed spent fuel into materials for nuclear weapons.

Israel's nuclear triad also includes the Dolphin-class submarines, designed by Germany for the Israeli Navy based on the Type-212 submarine. These submarines, with a displacement of 1,840 tons, a speed of 20 knots, a maximum diving depth of 350 meters, and an endurance of 50 days, are believed to be capable of carrying nuclear warheads. The Dolphins are equipped with 10 torpedo tubes—six standard 533mm tubes for conventional torpedoes and four larger 650mm tubes. These submarines are capable of launching American-made Tomahawk cruise missiles with a range of up to 2,500 km, or Israel's own Popeye Turbo SLCMs with a range of 1,500 km, both of which can carry nuclear warheads. Stationed in Haifa, these submarines patrol the Mediterranean and Persian Gulf, where they stand ready to conduct covert preemptive strikes against Iran or retaliate with nuclear weapons.

By establishing its nuclear triad, Israel demonstrates its commitment to nuclear deterrence. The country has never publicly confirmed its nuclear arsenal, as the ambiguity surrounding its nuclear capabilities benefits Israel's strategic position. The exact number of nuclear weapons in Israel's arsenal is unknown, but the country currently holds a dominant conventional military advantage. However, this advantage may be vulnerable to shifts in the regional geopolitical landscape, which could lead to diplomatic isolation and increased susceptibility to conventional military threats.

North Korea, officially known as the Democratic People's Republic of Korea (DPRK), claims to possess nuclear weapons, and it is widely believed that the country does. The CIA estimates that North Korea also has a considerable chemical weapons stockpile. Although North Korea was initially a signatory of the Nuclear Non-Proliferation Treaty (NPT), it withdrew in 2003, citing 'serious threats' to its sovereignty and security due to the hostile policies of the United States. In 2021, North Korean leader Kim Jong-un announced that the country had completed plans for the development of nuclear-powered submarines. Kim stated: 'The research and development of a nuclear-powered submarine have been completed and will proceed to the final review process.' Kim further declared that North Korea would continue to enhance its nuclear weapons as a deterrent against foreign threats.

North Korea also announced plans to extend the range of its nuclear weapons to approximately 15,000 km. Kim Jong-un urged the United States to abandon its hostile stance in order to improve bilateral relations. 'North Korea intends to continue upgrading its nuclear and missile capabilities under the guise of self-defense, mobilizing all available resources to improve the lives of its people by 2022, marking the 110th anniversary of the birth of the late leader Kim Il-sung,' reports from CFR suggest. North Korea's conventional weapons have also gained attention, with the South Korean Ministry of Defense reporting that North Korea's military has developed new missile launchers capable of targeting any location in South Korea. The CFR report concludes that North Korea will persist in enhancing its nuclear and missile capabilities in the name of self-defense and to commemorate the 110th anniversary of Kim Il-sung's birth in 2022.

Russia possesses an enormous stockpile of nuclear weapons. Despite economic sanctions that have hampered some of its military modernization efforts, Moscow continues to maintain a diverse array of weapons, including a massive nuclear arsenal. With advanced weaponry such as the RS-28 Sarmat and the uncrewed underwater vehicle known as the Status-6 oceanic multipurpose system, Russia has the ability to inflict much greater devastation on its targets than during the Cold War period.

The concept of 'Mutually Assured Destruction' (MAD) has become one of the most effective deterrents to large-scale war between superpowers. While Russia's nuclear stockpile is now significantly smaller than at the height of the Cold War, it still relies on nuclear weapons as a means to achieve geopolitical objectives. To ensure compliance with nuclear warhead and missile limits, the New START treaty includes provisions for mutual monitoring and verification. By 2018, both Russia and the U.S. had met their obligations under the New START treaty, and in early 2021, the agreement was extended for an additional five years.

Both countries' nuclear arsenals also include hundreds of short-range nuclear weapons that are not regulated by any treaties. Currently, Russia possesses nearly 2,000 of these weapons, approximately ten times the number held by the U.S., according to widely cited estimates. Russia has stated that the use of nuclear weapons is 'an extreme measure, only to be used when absolutely necessary' and that it 'will do everything necessary' to avoid their use. In a speech on February 24, the day Russia launched its special military operation in Ukraine, President Putin referred to the 'primary threats' posed to Moscow by Western politicians, who, year after year, have expanded NATO closer to Russia's borders. He stated that NATO expansion is a 'matter of survival' for Russia, calling it a threat not only to Russia's interests but also to the country's very existence.

The United States currently has 420 intercontinental ballistic missiles (ICBMs), each carrying a nuclear warhead, and 240 submarine-launched ballistic missiles (SLBMs), each armed with multiple warheads. Of the approximately 5,000 total nuclear warheads, 2,150 are operational, while about 2,850 are in reserve. Additionally, around 3,500 warheads are stored. The ICBMs deployed on land are assigned to three missile wings: the 90th Missile Wing at Warren Air Force Base in Wyoming, the 91st Missile Wing at Minot Air Force Base in North Dakota, and the 341st Missile Wing at Malmstrom Air Force Base in Montana. Each wing controls 150 missiles through five launch control centers. These ICBMs are equipped with W78 and W87 warheads, each with a yield of 300 kilotons for maximum destruction. The W62 warheads, with a yield of 170 kilotons, were decommissioned in 2010. The Air Force Global Strike Command (AFGSC) oversees all ICBMs and the U.S. strategic bombers (formerly managed by the Air Force Space Command).

The centralization of strategic nuclear airpower under one command is aimed at preventing any operational failures. According to the Biden administration’s budget proposal, the UK is now included in a list of countries investing in infrastructure for storing “special weapons,” alongside Belgium, Germany, Italy, the Netherlands, and Turkey, where the U.S. stores approximately 100 B61 nuclear bombs. The Pentagon confirmed that an upgrade project will proceed, with a total cost of $384 million over 13 years, focusing on security enhancements, communication systems, and infrastructure.

Hans Kristensen, the Director of the U.S. nuclear information project at the Federation of American Scientists (FAS), suggests that upgrades could take place at the underground storage facilities at RAF Lakenheath, 100 km northeast of London, where the U.S. Air Force’s 48th Fighter Wing is stationed. The 48th Fighter Wing, traditionally equipped with F-15 fighters, is currently replacing its F-15Cs with F-35As. The ultimate plan is to establish two F-35A squadrons at Lakenheath, alongside two squadrons already equipped with the F-15E Strike Eagle. Both F-35A and F-15E aircraft are capable of carrying the new B61-12 nuclear bombs.

The People's Republic of China has developed and deployed various weapons of mass destruction, including chemical and nuclear weapons. China conducted its first nuclear test in 1964 and successfully tested a hydrogen bomb in 1967. Nuclear testing continued until 1996, when China signed the Comprehensive Nuclear-Test-Ban Treaty (CTBT). China also joined the Biological and Toxin Weapons Convention (BWC) in 1984 and the Chemical Weapons Convention (CWC) in 1997.

The size of China’s nuclear arsenal remains a state secret. Estimates vary widely regarding the scale of China’s nuclear stockpile. According to the Federation of American Scientists, China had approximately 260 nuclear warheads by 2015, making it the fourth-largest nuclear arsenal among the five nuclear-armed states recognized by the Nuclear Non-Proliferation Treaty. The SIPRI Yearbook 2020 estimated China's stockpile at 320 warheads, placing it third globally. Some estimates suggest China could "more than double" its warhead count on missiles capable of threatening the United States by the mid-2020s. Due to strict secrecy, it is difficult to ascertain the precise scale and composition of China's nuclear forces. Estimates have fluctuated over time; a 1984 U.S. intelligence report estimated China’s nuclear arsenal at 150 to 160 warheads, while a 1993 National Security Council report suggested China’s nuclear deterrent consisted of 60 to 70 nuclear-armed missiles.

In 2004, the U.S. Department of Defense assessed that China had around 20 intercontinental ballistic missiles (ICBMs) capable of targeting the United States. A 2006 estimate by the U.S. Defense Intelligence Agency suggested China possessed more than 100 nuclear warheads. By 2011, China’s nuclear stockpile was estimated to include around 55 to 65 ICBMs. In early 2011, China released a white paper on defense, reaffirming its nuclear policy of maintaining a minimum deterrent and pledging not to use nuclear weapons first. Despite this, China's increasing deployment of four new nuclear-powered submarines armed with ballistic missiles has raised concerns about its growing nuclear capabilities.