Japan’s United States–imposed postwar constitution renounced the use of offensive military force, but, Sheila A. Smith shows, a nuclear North Korea and an increasingly assertive China have the Japane…

John Campbell and Matthew Page provide an overview of the politics, history, and culture of Nigeria, including the threat of Boko Haram and religious conflicts.

Japan and South Korea are Western-style democracies with open-market economies committed to the rule of law. They are also U.S. allies. Yet despite their shared interests, shared values, and geographic proximity, divergent national identities have driven a wedge between them. Drawing on decades of expertise, Scott A. Snyder and Brad Glosserman investigate the roots of this split and its ongoing threat to the region and the world.

CFR President Richard N. Haass argues for an updated global operating system to address challenges from terrorism and the spread of nuclear weapons to climate change and cyberspace.

Of all the regions of the former Soviet Union, Central Asia is potentially one of the most explosive and certainly one of the least understood. It is also growing rapidly in importance to U.S. nation…