This is the first time since World War II that there may be no cooperative way out.

What to do to deter a Russian invasion of Ukraine—and what to do if deterrence fails.

Nine charts illustrate the extraordinary level of support the United States has provided Ukraine in its war against Russian invaders.

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…