Saudi Arabia displayed remnants of what it described as Iranian drones and cruise missiles used in an attack on Saudi oil facilities as"undeniable"evidence of Iranian aggression.
Amid escalating tensions between Washington and Tehran,US President Donald Trump says he has ordered a"substantial"increase in sanctions on Iran.
Vice-President Mike Pence said the US stands ready to defend its interests and allies in the Middle East.
Saudi Arabia says it can restore full production capacity at oil facilities attacked over the weekend by the end of September,sending crude prices tumbling.
This is not a"black swan"event. The long-festering contest for Gulf dominance is coming to a head,and the world economy could pay the price.
Iran's supreme leader says"there will be no talks with the US at any level"- remarks apparently meant to end all speculation about a possible US-Iran meeting between the two countries'presidents.
Motorists are increasingly concerned the attack on Saudi Arabia's oil facilities will drive prices at home up.
US military officials are also privately urging caution,seeking to defuse tensions they believe could push the United States into a possibly bloody conflict.
Trump added that Washington is looking to"definitively"determine the culprit,but"pretty much already know[s]".
The magnitude of the attacks on Saudi Aramco's biggest facilities has put a big question mark on its long-awaited IPO.
Saudi Arabia says that Iranian weapons were used to attack the kingdom’s oil installations,dismissing claims of responsibility by Yemen’s Houthi rebels.