Saudi Arabia calls attempted attack on Mecca a 'red line' as Iran-backed Houthis deny they did it

Saudi Arabia accused Yemen's Iran-backed Houthi rebels of trying to attack Islam's holiest city, as the region responded with condemnation Wednesday but no sign of military support. The kingdom, a key U.S. ally, declared Mecca a "red line" as it slid deeper into the new front of the Iran war.