On Saturday, Saudi Arabia shut down an important crude artery after a drone attack launched from Iraq. The shutdown restricts oil flow.

Iraq opened a probe into the strikes and closed three border crossings with Iran.

Yemen hit back against Houthis. Saudi Arabia has few options as it confronts growing dangers from Iran and its supporters. 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.