South Korea must capitalize on its diplomatic push to bridge the divide between its longtime ally and its combative neighbor.

Reports that China has stepped up efforts to gain influence in foreign political systems have sparked concern in Australia, New Zealand, and other states amid signs that the campaign may be shaping d…

With a bold modernization project, Saudi Arabia is embarking on reforms U.S. policymakers have been urging for decades. The crown prince’s recent crackdown could undermine this crucial effort.

A little-known treaty provides transparency for confirming arms control agreements and serves as an important measure of the health of the U.S.-Russia relationship.

Japanese Prime Minister Shinzo Abe is positioned to push constitutional revision following his landslide electoral win, but his efforts will be challenged at home and abroad.