On Monday, Trump said that he had instructed the U.S. Navy to "seek and interdict every vessel in international waters that has paid a toll to Iran," and the U.S. military later said that the "blockade will be enforced impartially against vessels of all nations entering or departing Iranian ports and coastal areas." However, ship tracking data analyzed by BBC Verify revealed that at least four Iran-linked vessels "crossed the Strait of Hormuz" without incident; two on Monday, and two overnight.