Daniel Ellsberg, famous for leaking the Pentagon Papers and his activism against nuclear weapons, announced recently that he has been diagnosed with terminal cancer. Mr. Ellsberg, now 91, copied the military’s secret 7,000-page history of the Vietnam War and gave it to The New York Times and The…

All wars have their iconic weapons, from the AK-47 to the I.E.D. In Ukraine, it’s the drone. A vast number and variety of drones — unmanned aerial vehicles — have been used on both sides of the war, including large military-grade machines and smaller consumer models. Drone operators are the new…