British Prime Minister Boris Johnson has blamed Iran for attacks on Saudi Arabian oil facilities ahead of a meeting with the country's president Hassan Rouhani.
Johnson said there was a "very high degree of probability" Iran was behind the drone and missile attacks on two oil facilities, which Tehran denies.
"I can tell you that the UK is attributing responsibility with a very high degree of probability to Iran for the Aramco attacks," BBC cited him as saying.
The prime minister declined to rule out military intervention and said sanctions were also a possibility.
Saudi Arabia has accused Iran of carrying out the September 14 attacks, in which 18 drones and seven cruise missiles hit an oil field and processing facility.