Henry Kissinger once complained that the Pentagon was crediting its long-range cruise missile with being a cure for everything but the common cold. It may not be the ultimate doomsday weapon, but this armed drone, which looks a bit like a stunted jet plane, promises to become one of the most versatile weapons in the U.S. arsenal—and the Russians have good reason to be impressed.
A descendant of World War II's German V-l "buzz bomb," the cruise is small (a typical model is about 20 ft. long and 20 in. in diameter) and relatively cheap (well under $1 million each). Different versions...