Boris Johnson has blamed Iran for the missile strike on Saudi Arabia ’s oil industry and stands ready to join Donald Trump in offering military help to the kingdom.There is “a very high degree of probability” that Tehran was behind the devastating attack that shut down half of Saudi oil production and has raised fears of war, the prime minister said.Images of the site show “remnants of Iranian-made cruise missiles”, a UK official added, making the claim of responsibility by Houthi rebels in Yemen “implausible”.From 15p €0.18 $0.18 USD 0.27 a day, more exclusives, analysis and extras.Mr Johnson said he had not yet decided on a response, but pointed to an American proposal to “do more to defend Saudi”.“We will be following that very closely and clearly, if we are asked, either by the Saudis or by the Americans, to have a role, then we will consider in what way we could be useful,” he told reporters.Until now, the UK has declined to echo the Mr Trump’s blaming of Iran for the incident on 14 September, which prompted him to warn the US stood “locked and loaded” to take military action .