Nuclear Issues

Russia's 2022 invasion of Ukraine illuminated the long profound shadow of nuclear weapons over international security. Russia's nuclear threats have rightfully garnered significant attention because of the unfathomable lethality of nuclear weapons. However, the use of such weapons in Ukraine is only one way—albeit the gravest— that Russia could challenge the global nuclear order. Russia's influence extends deep into the very fabric of this order—a system to which it is inextricably bound by Moscow's position in cornerstone institutions such as the Nuclear Non-Proliferation Treaty (NPT) and the International Atomic Energy Agency (IAEA). From withdrawing from key treaties to stymieing resolutions critical of misconduct, Moscow has demonstrated its ability to challenge the legitimacy, relevance, and interpretations of numerous standards and principles espoused by the West.

Joseph Nye considers lessons from his own work on preventing the spread of nuclear technology in the 1970s.

Joseph S. Nye writes that evaluating ethics in international relations is difficult, and Kissinger's legacy is particularly complex. Over his long tenure in government, he had many great successes, including with China and the Soviet Union and the Middle East. Kissinger also had major failures, including in how the Vietnam War ended. But on net, his legacy is positive. In a world haunted by the specter of nuclear war, his decisions made the international order more stable and safer.

Among the many issues surrounding China’s ongoing military modernization, perhaps none has been more dramatic than its nuclear weapons program. For decades, the Chinese government was content to maintain a comparatively small nuclear force. As recently as 2020, China’s arsenal was little changed from previous decades and amounted to some 220 weapons, around five to six percent of either the U.S. or Russian stockpiles of deployed and reserve warheads.

Stephen Walt analyses the past thirty years of U.S. foreign policy toward the Middle East, focusing on five events.

Belfer Center experts on the U.S.-China relationship and Middle East issues shared thoughts on the significance of the unexpected Iran-Saudi Arabia agreement brokered by China. 

Should a nuclear war “never be unleashed?” Can nuclear weapons be used to “ensure the safety of the Russian people?” Both, according to President Vladimir Putin, who has become fond of alternating assertive and conciliatory tones in his messaging on the conditions for the use of nuclear arms. Such discourse comes as he tries to coerce Ukraine into accepting his land grabs and prevent the West from escalating assistance to Kyiv, all while keeping China content.

A quarter-century ago, China conducted what it called “missile tests” bracketing the island of Taiwan to deter it from a move toward independence by demonstrating that China could cut Taiwan’s ocean lifelines. In response, in a show of superiority that forced China to back down, the United States deployed two aircraft carriers to Taiwan’s adjacent waters. If China were to repeat the same missile tests today, it is highly unlikely that the United States would respond as it did in 1996. If U.S. carriers moved that close to the Chinese mainland now, they could be sunk by the DF-21 and DF-26 missiles that China has since developed and deployed. This article presents three major theses concerning the military rivalry between China and the United States in this century.

Joseph Nye writes that even at this early stage, there are at least eight lessons— some old, some new— that the world is learning (or relearning) from the war in Ukraine.

Hamidreza Azizi and Nicole Grajewski analyze Russian Foreign Minister Sergei Lavrov's recent demands  for written guarantees that Western sanctions over Ukraine "will by no means affect our right to free and full-fledged trading, economic, investment, military and technical cooperation with Iran."