International Security & Defense

Does the March 22 terrorist attack at the Crocus City Hall concert venue outside Moscow signal a return of recurrent large-scale terrorism to Russia? Hopefully not and there are multiple ways to lower the probability of such recurrence.

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.

Stephen Walt elaborates his top five reasons why the Israeli-Palestinian conflict continues to take innocent lives, destabilize the region, consume disproportionate amounts of Washington's political bandwidth, and perpetuate fear, suffering, and injustice.

Juliette Kayyem argues that the sooner President Joe Biden acknowledges that the United States will likely be drawn into a fight to protect shipping traffic through the Suez Canal, the more time the U.S. military has to plan, and the less severe the harm will be to the global economy.

Juliette Kayyem warns that a second Trump term would validate the violent ideologies of far-right extremists—and allow them to escape legal jeopardy.

Jay Mens asks: Why won't the U.S. admit that Iran's proxies, which include Hamas, are acting in concert?

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.

As the war in Israel and Gaza continues, Professor Stephen Waltf and Ambassador Edward Djerejian were two of the five Harvard faculty and affiliates with expertise in the region who spoke with The Crimson about their views on the future of the conflict.