Editor’s Note: Drone strikes are among the most important, and among the most contentious, U.S. counterterrorism instruments. Data limits and the complexity of both cause and effect when it comes to terr...

Editor’s Note: The Obama administration's nuclear deal with Iran remains one of its most important, and most contentious, foreign-policy legacies. Much of the controversy in the United States stems from ...

Editor’s Note: Since 9/11, the United States has pushed all its allies to crack down on terrorism to prevent them from launching attacks or aiding others who might do so. President Trump has doubled down...