WASHINGTON — Pulitzer Prize-winning journalist Seymour Hersh has alleged US Navy divers laid bombs that destroyed the Nord Stream 2 natural gas pipeline under the Baltic Sea last September, drawing a denial from the Pentagon Wednesday. Hersh, who scooped journalism’s top award more than five decades ago for exposing the My Lai massacre of Vietnamese civilians by US troops in 1968, cited an unnamed source in reporting on Substack that Americans planted remotely triggered explosives that wrecked three of the four pipelines built to carry natural gas from Russia to Europe. Hersh, 85, went on to claim that the Navy...