Editor’s Note: The laws of war are written by and for states, but we want fighters in civil wars to treat civilians well, not use unconventional weapons, respect cultural heritage sites, and otherwise fi...

Editor’s Note: The war in Yemen has gone from bad to worse, leaving tens of thousands dead and hundreds of thousands of civilians at risk from disease and malnutrition. The war's complexity rivals its br...

Editor’s Note: Perhaps the biggest counterterrorism challenge facing the Trump administration is whether or not to keep a robust military presence in Syria now that the Islamic State has been forced unde...