Iranian oil minister warns of 'physical and cyber threats' following assault on Saudi facilities that has been blamed on Tehran

Foreign Office summons Iranian ambassador for dressing-down, says recent moves by Islamic Republic 'designed to disrupt regional security'

UK accuses Tehran of selling 2.1 million barrels of crude oil on board Adrian Darya to 'brutal' Assad regime, violating international sanctions

Iranian president says third step away from 2015 nuclear deal will be of 'an extraordinarily significant nature' unless Europe comes up with solution

Washington separately offers $15 million reward for information that could disrupt financial mechanisms of the Revolutionary Guards, including the Quds Force

Adrian Darya 1 turns off tracking beacon 45 nautical miles from port of Tartus, renewing speculation the vessel is delivering 2 million barrels of crude oil to Assad regime

Adrian Darya 1 slows to near-stop in eastern Mediterranean as US maintains Tehran-flagged vessel intends to sell crude oil to Assad regime

Treasury Department says ultimate beneficiary from sale of crude aboard Adrian Darya 1 is Iran's Quds Force, which will use proceeds to 'propagate terrorism'

New York Times says American hack wiped out critical data base used by Revolutionary Guards; Tehran still struggling to restart system

Tehran doesn't name buyer of crude carried by Adrian Darya 1 tanker, which was temporarily seized by Gibraltar for suspected sanctions-busting