International Security & Defense

Joseph Nye argues that the "one China" formula, if combined with other measures to bolster deterrence against any sudden acts of aggression, can still help to keep the peace.

Stephen Walt argues that because no one knows what Putin might do, NATO's European members should increase their defense capabilities and correct any obvious vulnerabilities. At the same time, however, the United States and its NATO allies should acknowledge Russia's legitimate security concerns and consider what they can do to allay them.

This week in Say More, Project Syndicate talks with Joseph S. Nye, Jr., an emeritus professor at Harvard Kennedy School, a former U.S. assistant secretary of defense, and the author, most recently, of A Life in the American Century.

The non-Soviet members of the Warsaw Pact contributed to the end of the Cold War along with the superpowers. These Eastern European states recognized that their relationship with the Soviet Union would impede their success in the post–Cold War world, so they ended the Pact.

Stephen Walt writes that those who favor foreign policy restraint believe the United States should trade and invest in other countries, encourage other states to do the same, and be open to managed immigration instead of building walls in a fit of xenophobia.

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.

Stephen Walt argues that bringing Ukraine into NATO now is a bad idea that will prolong the war and leave Kyiv in an even worse position over time.

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

Matthew Evangelista examines the precedents and possibilities for postwar European security in an interview with International Security Executive Editor Jacqueline L. Hazelton.

Stephen Walt elaborates on the multiple obstacles that Europe faces on the way to military autonomy.