DUBAI/LONDON—Britain was weighing its next moves in the Gulf tanker crisis on July 21, with few good options apparent as a recording emerged showing that the Iranian military defied a British warship when it boarded and seized a ship last week.
Little clue has been given by Britain on how it plans to respond after Iranian Revolutionary Guards rappelled from helicopters and seized the Stena Impero in the Strait of Hormuz on July 19 in apparent retaliation for the British capture of an Iranian tanker two weeks earlier.
