The United States, Australia, Canada, Japan, South Korea, New Zealand, and the United Kingdom have warned their citizens to avoid or reconsider travel to Saudi Arabia. This follows a series of Houthi attacks on Saudi airports, including a projectile strike on King Khalid International Airport in Riyadh on Sunday (October 11) that killed one person and injured 11. Saturday's attack killed 13 and injured over 300, making it the deadliest attack in Saudi Arabia in over a decade. The attacks have led to the closure of international airports in Riyadh and Dammam, and over 150 flight cancellations and 374 delays at Jeddah Airport, causing severe disruption to aviation in the Middle East.