On Saturday, Saudi Arabia halted an important crude artery after a drone attack fired from Iraq. The shutdown cuts oil flow.
Iraq launched an investigation into the strikes and sealed three border crossings with Iran.
Yemen retaliated against Houthis. Saudi Arabia has few options as it confronts growing dangers from Iran and its allies. The attack from Iraq triggered the pipeline shutdown. Iraq's probe over the attacks is ongoing. The closed frontier posts with Iran are part of Iraq's response.