The U.S. Army is training Apache pilots to shoot down drones as militaries around the world assess the efficacy of 20th-century technologies in a new era.

© Lena Mucha for The New York Times

Much has been said about how Ukraine should treat Russian prisoners of war. Less attention has been paid to the emotional struggle for the Ukrainians tasked with that work.

© Oksana Parafeniuk for The New York Times