Nuclear Notebook: How many nuclear weapons does China have? China is continuing the nuclear weapons modernization program it initiated in the 1980s, fielding more types and greater numbers of nuclear weapons than before. Since our previous Nuclear Notebook on China in July 2016, the country has continued fielding a new version of an existing nuclear … Continued

Nuclear Notebook: How many nuclear weapons does Russia have? Russia is in the second half of a decades-long modernization of its strategic and non-strategic nuclear forces to replace Soviet-era weapons with newer systems. These modernizations, combined with an increase in the number and size of military exercises and occasional explicit nuclear threats against other countries, … Continued

Nuclear Notebook: How many nuclear warheads does the United States have? At the beginning of 2018, the US Defense Department maintained an estimated stockpile of 4,000 nuclear warheads for delivery by more than 800 ballistic missiles and aircraft. Since September 2009, when the United States announced that the nuclear arsenal contained 5,113 warheads, the stockpile … Continued

Nuclear Notebook: How many nuclear weapons does North Korea have? North Korea has made significant advances over the past two decades in developing a nuclear weapons arsenal. It has detonated six nuclear devices – one with a yield of a couple hundred kilotons – and test-flown a variety of new ballistic missiles that potentially put … Continued

Nuclear Notebook: How many nuclear weapons does the U.S. have in South Korea? During the Cold War, the United States deployed nuclear weapons in South Korea continuously for 33 years, from 1958 to 1991. The South Korean-based nuclear arsenal peaked at an all-time high of approximately 950 warheads in 1967. Since the last US nuclear … Continued

Nuclear Notebook: How many nuclear weapons are there in the world? As of mid-2017, we estimate that there are nearly 15,000 nuclear weapons located at some 107 sites in 14 countries. Roughly, 9400 of these weapons are in military arsenals; the remaining weapons are retired and awaiting dismantlement. Approximately 4150 are operationally available, and some … Continued

Nuclear Notebook: How many nuclear weapons does India have? India continues to modernize its nuclear arsenal with development of several new nuclear weapon systems. We estimate India currently operates seven nuclear-capable systems: two aircraft, four land-based ballistic missiles, and one sea-based ballistic missile. At least four more systems are in development. The development program is … Continued

Nuclear Notebook: How many nuclear weapons does Russia have? Russia is in the middle of a broad modernization of its strategic and nonstrategic nuclear forces. While much of this process is simply a continuation of well-known programs that have been underway for many years, some developments are new. These modernizations, combined with an increase in … Continued

Nuclear Notebook: How many nuclear bombs does the U.S. have? At the beginning of 2017, the US Defense Department maintained a stockpile of an estimated 4,480 nuclear warheads for delivery by more than 800 ballistic missiles and aircraft. This figure is unchanged over the last year. Since September 2009, when the United States announced that … Continued

Nuclear Notebook: How many nuclear weapons does Pakistan have? Pakistan continues to expand its nuclear arsenal with more warheads, more delivery systems, and a growing fissile materials production industry. Analysis of a large number of commercial satellite images of Pakistan army garrisons and air force bases shows what appear to be mobile launchers and underground … Continued

Nuclear Notebook: How many nuclear bombs does China have? The modernization of China’s land-based nuclear-capable missile force has progressed significantly over the past year, with Beijing fielding a new version of an existing nuclear missile and a new dual-capable missile. The country has also reorganized its nuclear missile command structure. The authors estimate that, in … Continued

Nuclear Notebook: How many nuclear warheads does Russia have? Russia is in the middle of a broad modernization of its strategic and nonstrategic nuclear forces. While much of this process continues well-known programs that have been underway for many years, some developments are new. The modernizations, combined with an increased number of military exercises and … Continued

Nuclear Notebook: How many nuclear warheads does the U.S. have? At the beginning of 2016, the US Defense Department maintained a stockpile of an estimated 4,670 nuclear warheads for delivery by more than 800 ballistic missiles and aircraft. The stockpile did not shrink significantly over the last year, but has shrunk by roughly 350 warheads … Continued

Nuclear Notebook: How many nuclear weapons did the U.S. have at sea during the Cold War? Newly declassified documents from the US Defense Department show how many nuclear weapons the United States deployed at sea between 1953 and 1991. The documents, which give totals for the Atlantic Ocean, Pacific Ocean, and Mediterranean Sea, show that … Continued

Nuclear Notebook: How many nuclear bombs does Pakistan have? Pakistan continues to expand its nuclear arsenal and is growing its fissile materials production industry. Since our last Nuclear Notebook on the country in 2011 (Kristensen and Norris, 2011), it has deployed two new nuclear-capable short-range ballistic missiles (SRBM) and a new medium-range ballistic missile (MRBM), … Continued

Nuclear Notebook: How many nuclear warheads does India have? India’s drive to develop a nuclear triad reached an important milestone in 2014 with the first nuclear-powered ballistic missile submarine deploying on its initial, brief, sea-trial voyage. Now, with several long-range ballistic missiles in development, the Indian nuclear posture is entering an important and dynamic new … Continued

Nuclear Notebook: How many nuclear bombs does China have? We estimate that China has approximately 260 nuclear warheads in its stockpile for delivery by approximately 160 land-based ballistic missiles as well as aircraft1 and an emerging ballistic submarine fleet. This estimate is 10 warheads higher than last year, primarily due to additional sea-launched ballistic missiles. … Continued

Nuclear Notebook: How many nuclear bombs does Russia have? Russia is in the middle of a broad modernization of its strategic and nonstrategic nuclear forces. While much of this process continues well-known programs that have been under way for many years, some developments are new. Combined, the steps Moscow is taking contribute to growing concern … Continued

Nuclear Notebook: How many nuclear weapons does the US have? At the beginning of 2015, the US Defense Department maintained a stockpile of an estimated 4,760 nuclear warheads for delivery by more than 800 ballistic missiles and aircraft. The stockpile did not shrink significantly over the last year, but has shrunk by roughly 350 warheads … Continued

Nuclear Notebook: How many nuclear weapons exist in the world? Longtime Nuclear Notebook readers know that we typically take an in-depth look at arsenals around the world to reveal, as much as possible, what kind of nuclear weapons are deployed, where they are, and in what numbers. In this issue of the Bulletin of the … Continued