Saudi Arabia declared Mecca a "red line" and warned that the Saudi-led coalition would take necessary deterrent measures against the Houthis.

From the articleSaudi Arabia calls an attempted Mecca attack a 'red line' as Houthis deny they did itAlso in Saudis seek allies’ help as missile defenses run low in fight with Houthis, officials say, Saudi Arabia calls attempted attack on Mecca a 'red line' as Iran-backed Houthis deny they did it, Saudi Arabia Calls Mecca a ‘Red Line’ After Alleged Houthi Drone Attack on the Holy Site