Hours before the Houthi attack, the military chiefs of Saudi Arabia and defense allies Pakistan ​and Turkey reviewed threats facing Saudi Arabia ​at a meeting in the Saudi capital. The Houthis declared a naval blockade of Saudi Arabia in July and have since been launching increasing attacks on Saudi cities and shipping, further heightening tensions in the Middle East. Key points and original sources are listed below.

• Hours before the Houthi attack, the military chiefs of Saudi Arabia and defense allies Pakistan ​and Turkey reviewed threats facing Saudi Arabia ​at a meeting in the Saudi capital.S1

• The Houthis declared a naval blockade of Saudi Arabia in July and have since been launching increasing attacks on Saudi cities and shipping, further heightening tensions in the Middle East.S2