To understand Trump is to recognize that he wants to bring a 19th-century U.S. foreign policy into the 21st century.

Israel and Hamas agreed to a provisional ceasefire deal after 15 months of war, raising countless questions about the future ...

Trump is right that Europeans should step up when it comes to the continent’s defense. But his plan to make them do so is ...

Jennifer Kavanagh is director of military analysis and a senior fellow at Defense Priorities. She is also an adjunct ...

Daniel R. DePetris is a fellow at Defense Priorities and a syndicated foreign affairs columnist at the Chicago Tribune.