Ukraine’s president warned of massive Russian strikes within a day—and the follow-on barrage is sharpening questions about America’s air-defense support and strategy.Story SnapshotZelenskyy publicly signaled imminent Russian drone-and-missile attacks and pressed the United States for Patriot air defenses .Subsequent reporting described heavy strikes on...

When a former Centers for Disease Control and Prevention director calls Ebola a “perfect storm,” he is really saying the virus is outrunning the people who are supposed to be guarding the gate.Story SnapshotEbola spreads slowly compared with respiratory viruses, but it hits hard...