The Iranian navy boarded and briefly seized a Liberian-flagged oil tanker near the strategic Strait of Hormuz amid heightened tensions between Tehran and the U.S., a U.S. military official said Thursday.The U.S. military’s Central Command published a black-and-white video showing what appeared to be special forces fast-roping down from a helicopter onto the MV Wila, whose last position appeared to be off the eastern coast