SEOUL, South Korea (AP) — The United States flew a B-1B supersonic bomber over South Korea on Wednesday as part of a massive combined aerial exercise involving hundreds of warplanes, a clear warning after North Korea last week tested its biggest and most powerful missile yet.

South Korea's Joint Chiefs of Staff said the Guam-based bomber simulated land strikes at a military field near South Korea's eastern coast during a drill with U.S. and South Korean fighter jets.

"Through the drill, the South Korean and U.S. air forces displayed the allies' strong intent and ability to punish North Korea w...