U.S. Secretary of State Mike Pompeo said there is "unmistakable" evidence that Iran is responsible for the recent attacks on two oil tankers in the Gulf of Oman. Tehran has denied any involvement claiming that “if Iran ever decided to block the export of oil from the Gulf, it would do so openly, without resorting to deception or covert operations, unlike the terrorist and deceptive US.” Tehran threatens to speed up the countdown to its breaching the nuclear deal, announcing it will break the uranium stockpile limit set in its nuclear deal in the next 10 days. President Trump has vowed that Iran will not be permitted to obtain a nuclear weapon.