A quarter-century after the end of the Cold War, we unexpectedly find ourselves in a second one. The United States and its partners have a large stake in greater Russian restraint while Vladimir Puti…

China has 800 million Internet users and is overtaking the United States in areas such as drones, mobile payments, bike sharing and artificial intelligence. But Trump is responding to the China chall…

UN officials warn that deteriorating conditions threaten disaster for Yemenis on a scale few have ever witnessed. Ending the civil war is essential, and the United States could prod the peace process…

What a late-night meal in Italy taught me about U.S. power in the Arab world.

The Democratic field could touch on a number of foreign policy issues, from climate change to Iran, during its first prime-time sparring session.