In this July 2, 2012 file photo, an Iranian Revolutionary Guard speedboat moves in the Persian Gulf near an oil tanker. (Associated Press/Vahid Salemi)
The U.S. launched a cyberattack against Iran in late June that successfully disrupted the ability of Iran's Islamic Revolutionary Guard Corps to attack oil tankers, according to a New York Times report based on discussions with senior American officials.
The cyberstrike reportedly came the same day President Donald Trump called off military strikes last minute in retaliation for Iran's downing of a U.S. drone. Trump said the strikes would not have been proportionate to the downing of an unmanned aircraft.
Trump had said a cyberoperation was underway, but the New York Times report on Wednesday expanded on the impact of the attack as well as the Trump administration's motives.
GENEVA/DUBAI (Reuters) - U.S. President Donald Trump said he was prepared to take military action to stop Tehran from getting a nuclear bomb but left open whether he would back the use of force to protect Gulf oil supplies that Washington fears may be under threat by Iran.
Worries about a confrontation between Iran and the United States have mounted since attacks last week on two oil tankers near the strategic Strait of Hormuz shipping lane at the entrance to the Gulf. Washington blamed long-time foe Iran for the incidents.
Tehran denies responsibility but the attacks, and similar ones in May, have further soured relations that have plummeted since Trump pulled the United States out of a landmark international nuclear deal with Iran in May 2018.
Trump has restored and extended U.S. economic sanctions on Iran. That has forced countries around the world to boycott Iranian oil or face sanctions of their own.
But in an interview with Time magazine, Trump, striking a different tone from some Republican lawmakers who have urged a military approach to Iran, said last week's tanker attacks in the Gulf of Oman had only a "very minor" impact so far.
Asked if he would consider military action to prevent Iran from obtaining nuclear weapons or to ensure the free flow of oil through the Gulf, Trump said: "I would certainly go over nuclear weapons and I would keep the other a question mark."
The owner of one of the two oil tankers attacked in the Gulf of Oman said the crew saw "flying objects" just before the ship was hit, seeming to contract a narrative from the U.S. government suggesting mines were involved.
Yutaka Katada, the chief executive of Japanese shipping company Kokuka Sangyo, discussed the incident with reporters in Tokyo on Friday.
He said sailors on the Kokuka Courageous saw the objects above the water, and suggested they could be bullets, The Associated Press reported.