On Saturday, Saudi Arabia closed an important crude artery after a drone attack launched from Iraq. The shutdown cuts oil flow.
Iraq launched a probe into the strikes and sealed three border crossings with Iran.
Yemen retaliated against Houthis. Saudi Arabia is running out of options as it confronts mounting threats from Iran and its supporters. The attack from Iraq triggered the pipeline shutdown. Iraq's probe over the attacks continues. The closed frontier posts with Iran are part of Iraq's response.