A nuclear nonproliferation expert explains why Iran was always unlikely to return to the 2015 international agreement that limited its nuclear weapon development.
L’expertise universitaire, l’exigence journalistique
Articles sur Nuclear war
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Nuclear war would trigger a global food crisis lasting at least a decade, in which hundreds of millions or more would be likely to starve.
The deal to restart grain shipments won’t bring food prices back to pre-war levels.
Using nuclear weapons in Ukraine would be difficult and risky for Russia.
Concerns about aggression from North Korea and China might drive some Asian countries to develop their own nuclear arsenals.
The reasons for the prominence of the Ukraine war in the West are many – and include the Ukrainian government’s strategic efforts to tailor presentations of the conflict for Western sensibilities.
The sort of scenarios that might lead to the use of nuclear weapons in the Ukraine war would require a significant deterioration in Russian fortunes — and greater western involvement in the conflict.
The world’s failure to contain the nuclear threat is frighteningly evident in the potential risk of war in Ukraine spinning out of control.
Ukrainian President Volodymyr Zelenskyy has warned nations to prepare for the possibility that Russia will use tactical nuclear weapons.
Despite decades of progress on nonproliferation, Russia’s new threats of nuclear strikes bring to mind that convincing countries to reduce their nuclear weapons has long been very difficult.
Both the Russian and US arsenals boast thousands of nuclear weapons, located in various places around their own countries and, for the US, in Europe as well.
The end is often envisioned the same way: abruptly, hopelessly and completely. How does this constrain the range of possible solutions?
Belarus’ alliance with Russia is a strategic factor in the Ukraine war. The country’s long-term dictator, Alexander Lukashenko, has indicated he will do as Russian President Vladimir Putin says.
Experts around the world have been warning nuclear weapons are increasingly being seen as ‘usable’ by the political and military leaders who wield them.
The risks of using aerosols to reflect sunlight and cool the planet include creating extreme weather and worsening catastrophes.
Kim Jong Un has followed his father and grandfather in ruling by fear. The coronavirus pandemic has made North Korea ever more isolated, while expanded military capabilities make it a growing threat.
Marine fish could serve as a crucial global emergency food supply in times of crisis, if marine ecosystems were in a healthy state to start with.
The threat of nuclear war has not diminished, despite the lessons learned from the Hiroshima and Nagasaki bombings in 1945.
As Pope Francis becomes the first pontiff in the nuclear era to call for total disarmament, all of us – whether secular or religious – can engage through creative and proactive moral responsibility.
Other existential risks include the decline of natural resources (particularly water), human population growth beyond the Earth’s carrying capacity, and nuclear weapons.
Les contributeurs les plus fréquents
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Peace Studies and International Development, University of Bradford
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Assistant Professor of Economics, University of California, Merced
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Associate Professor of Disaster and Emergency Management, York University, Canada
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Associate Professor of Political Science, Brock University
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Professor of International Relations, USC Dornsife College of Letters, Arts and Sciences
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Lecturer, University of Aberdeen
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Lecturer, London School of Economics and Political Science
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Professor of International Relations and Security, University of Bradford
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Simons Chair in Disarmament, Global and Human Security at the Liu Institute for Global Issues, University of British Columbia
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Associate Professor of International Relations, American University School of International Service
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Lecturer, Aberystwyth University
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Adjunct Assistant Professor in Liberal Arts, Richmond American International University
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Honorary Principal Fellow, School of Population and Global Health, The University of Melbourne
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Professor at the Centre for International Studies and Diplomacy, SOAS, University of London
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Founding director of the Nuclear Knowledges program, Sciences Po
