Articles

In this Q&A, Joseph S. Nye talks about his advice for the interim and future president of Harvard in the wake of Claudine Gay's resignation, which countries should be highest on our radar to prevent the threat of nuclear war, what role the U.S. should play in the Russia-Ukraine war, the significance of U.S. alliances in the Middle East, and more.

An analysis of Taiwan’s military value concludes that its reunification with China would improve Chinese submarine warfare and ocean surveillance capabilities, tipping the military balance in China’s favor. These findings have important implications for U.S. operational planning, policy, and grand strategy.

States frequently acquire proof that other states have violated norms. Yet, existing theories do not fully explain how states wield such proof to coerce wrongdoers. Four case studies of nuclear proliferation probe a novel theory of how states coerce norm violators by concealing, sharing privately, or publicizing proof of guilt.

Wedge strategy theory explains how states use strategic arms control to divide adversaries by affecting their trust, threat perceptions, and beliefs about a commitment’s trade-offs. Examining three landmark arms control negotiations shows how the wedge motive was a key component to these negotiations.

Modern states recurrently buttress their militaries with legionnaires—soldiers who are neither citizens nor subjects of the governments for which they fight. Legionnaire recruitment is a function of political constraints on a government's ability to enlist citizens and its perceptions of external territorial threats.

If the United States were to withdraw from Europe, any European effort to develop an autonomous defense capacity would be fundamentally hampered by profoundly diverging threat perceptions and severe military capacity shortfalls that would be very costly and time-consuming to close.

Since the end of World War II, nation-states in international conflict have made concerted efforts to restrain the weaponization of water. Distinct from realist and rationalist explanations, the historical record reveals the rise of an international normative inhibition—a “water taboo”—on using water as a weapon.

Trump tied American jobs to endless wars in the Middle East. Biden should link them to renewed diplomacy.

A comparative analysis of the United States’ and the Soviet Union’s previously underexplored radiological weapons programs identifies the drivers behind their rise and demise. The findings of this analysis illuminate the factors likely to affect the pursuit of radiological weapons by other states in the future.

David M. Allison and Stephen Herzog respond to Brendan Rittenhouse Green and Austin Long’s winter 2019/20 article, “Conceal or Reveal? Managing Clandestine Military Capabilities in Peacetime Competition.”