Modernization of nuclear arsenals continues

A new report finds that all the nuclear weapon-possessing states are developing new nuclear weapon systems and modernizing their existing systems. Nine states—the United States, , the United Kingdom, France, China, India, Pakistan, Israel, and North Korea—possess approximately 14,465 nuclear weapons. This marked a decrease from the approximately 14,935 nuclear weapons these states were estimated to possess at the beginning of 2017.

The Stockholm International Peace Research Institute (SIPRI) today (Monday, 18 June) released the findings of SIPRI Yearbook 2018, which assesses the current state of armaments, disarmament and international security. Among the key findings: All the nuclear weapon-possessing states are developing new nuclear weapon systems and modernizing their existing systems.

At the start of 2018 nine states—the United States, Russia, the United Kingdom, France, China, India, Pakistan, Israel, and the Democratic People’s Republic of Korea (North Korea)—possessed approximately 14,465 nuclear weapons. This marked a decrease from the approximately 14,935 nuclear weapons that SIPRI estimated these states possessed at the beginning of 2017.

The decrease in the overall number of nuclear weapons in the world is due mainly to Russia and the United States—which together still account for nearly 92 percent of all nuclear weapons—further reducing their strategic nuclear forces pursuant to the implementation of the 2010 Treaty on Measures for the Further Reduction and Limitation of Strategic Offensive (New START).

SIPRI notes that despite making limited reductions to their nuclear forces, both Russia and the United States have long-term programs under way to replace and modernize their nuclear warheads, missile and aircraft delivery systems, and nuclear weapon production facilities. The United States most recent Nuclear Posture Review (NPR), published in February 2018, reaffirmed the modernization programs and approved the development of new nuclear weapons. The NPR also emphasized expanding nuclear options to deter and, if necessary, defeat both nuclear and ‘non-nuclear strategic attacks’.

“The renewed focus on the strategic importance of nuclear deterrence and capacity is a very worrying trend,” says Ambassador Jan Eliasson, Chair of the SIPRI Governing Board. “The world needs a clear commitment from the nuclear weapon states to an effective, legally binding process towards nuclear disarmament.”

The nuclear arsenals of the other nuclear-armed states are considerably smaller, but all are either developing or deploying new nuclear weapon systems or have announced their intention to do so. India and Pakistan are both expanding their nuclear weapon stockpiles as well as developing new land-, sea- and air-based missile delivery systems. China continues to modernize its nuclear weapon delivery systems and is slowly increasing the size of its nuclear arsenal.

In 2017 North Korea continued to make technical progress in developing its nuclear weapon capabilities, including the test of—what was claimed to be—a thermonuclear weapon, in September. North Korea also demonstrated unexpected rapid progress in the testing of two new types of long-range ballistic missile delivery systems.

“Despite the clear international interest in nuclear disarmament reflected in the conclusion in 2017 of the Treaty on the Prohibition of Nuclear Weapons, the modernization programmes under way in the nuclear weapon-possessing states indicate that genuine progress towards nuclear disarmament will remain a distant goal,” says Shannon Kile, Senior Researcher with the SIPRI Disarmament, Arms and Non-proliferation Program. 

— Read more in SIPRI Yearbook 2018 (SIPRI, June 2018)

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