The US Cyber Command conducted cyber-attacks against Iran's computer systems that control rocket and missile launches, the Washington Post (WP) reports. According to WP sources, the offensive strikes were approved by President Trump, based on the proposal by Pentagon in response to alleged Iranian attacks on two oil tankers in the Gulf of Oman. The attacks, which did not cause any casualties, took place along with the decision by President Trump to call back conventional strikes because they would not be 'proportionate'. Iran's Telecommunications Minister Mohammad Javad Azari Jahromi confirmed there are cyber-attack attempts, but denied any success, AlJazeera reports.