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Related: Editorials & Other Articles, Issue Forums, Alliance Forums, Region ForumsThe Economist : The world is facing an upsurge of nuclear proliferation
https://www.economist.com/leaders/2021/01/30/the-world-is-facing-an-upsurge-of-nuclear-proliferation
To stop it, the nuclear powers need to act
Thirty-one countries, from Brazil to Sweden, have flirted with nuclear weapons at one time or another. Seventeen launched a formal weapons programme. Just ten produced a deliverable bomb. Today nine states possess nuclear arms, no more than a quarter-century ago. Yet the long struggle to stop the worlds deadliest weapons from spreading is about to get harder. In the past 20 years most countries with nuclear ambitions have been geopolitical minnows, like Libya and Syria. In the next decade the threat is likely to include economic and diplomatic heavyweights whose ambitions would be harder to restrain. Chinas rapidly increasing regional dominance and North Koreas growing nuclear arsenal haunt South Korea and Japan, two of Asias largest powers. Irans belligerence and its nuclear programme loom over the likes of Saudi Arabia and Turkey (see article). Proliferation is not a chain reaction, but it is contagious. Once the restraints start to weaken they can fail rapidly.
The nuclear omens are bad. Arms control between America and Russia, which saw cuts of 38,000 warheadsa 79% fallin 1991-2010, has dwindled. On January 26th Presidents Joe Biden and Vladimir Putin agreed to extend the last remaining pact, the New start treaty, for five years. That is welcome, but prospects for a follow-on are dim. China, India, North Korea and Pakistan are all expanding and modernising their nuclear forces. There is dismal progress towards global disarmament, the ultimate aim of the Non-Proliferation Treaty (npt), the cornerstone of the nuclear order. A new treaty banning the bomb, which was signed by 86 countries and came into force on January 22nd, channels the frustration among nuclear have-nots. It accomplishes little else. If nuclear weapons are not going away, and security threats are worsening, some states will be tempted to pursue a bomb of their own. In decades past America kept nuclear aspirants in line, threatening to withdraw security guarantees from errant friends, like Taiwan, and using sanctions and military force to dissuade enemies, such as Iraq. Yet the currency of American power is weaker today. Donald Trumps tempestuous term has sown doubts about Americas appetite to defend allies and enforce rules. They will linger, however much Mr Biden seeks to restore an orthodox foreign policy.
Consider the nuclear umbrella that America extends over Asian allies. It amounts to a promise that, should North Korea or China strike Seoul or Tokyo, America would retaliate against Pyongyang or Beijing. For decades, America could issue that threat confident that its own cities were out of range of North Korean missiles. Now they are not. An American strike on Pyongyang would put San Francisco at risk. That may make Mr Biden reluctant to acta calculation that could embolden Kim Jong Un to attack Seoul. No wonder that, particularly in times of crisis, most South Koreans say that they would like to see a return of the American tactical nuclear weapons withdrawn from their soil in 1991 or, failing that, an indigenous South Korean bomb. In democracies like South Korea, Japan and Taiwan, nuclear ambitions are tempered by political reality. The Middle East is different. The nuclear deal curtailing Irans nuclear programme is collapsing. Even if Mr Biden revives it, many of its provisions expire in a decade. Should Iran at any time look as if it is contemplating going nuclear, Saudi Arabia will not want to fall behind. Muhammad bin Salman, the Saudi crown prince, has few domestic checks on his authority and ambitious plans for nuclear technology. Turkey could well follow.
If the nuclear order starts to unravel, it will be almost impossible to stop. Hence the importance of acting today. America, China, Europe and Russia share an interest in stopping proliferation. Russia does not want a nuclear Iran any more than America does. The prospect of a nuclear-armed Japan would be among Chinas worst nightmares. The Iranian nuclear deal in 2015 showed that rivals can muster a response to proliferation. The nuclear states should start with the basics. America and Russia still have 90% of the worlds nuclear warheads, so any effort begins with them. Now that New start will be extended, they should begin work on a successor that would include other weapons, such as hypersonic gliders and lower-yield warheads, which Russia has in abundance. More radical ideas should also be discussed. America operates a triad of nuclear forces: silos on land, submarines at sea and bombers in the air. Retiring the land-based missiles would demonstrate genuine progress towards disarmament, without eroding deterrence.
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