UN and EU leaders voiced shock on Sunday at an attack by Yemen's Houthi rebels on Riyadh airport in Saudi Arabia and warned against an escalation in the deadly conflict. Several embassies have issued warnings to their citizens to avoid the area.
UN Secretary General Antonio Guterres said he was "deeply shocked" by Saturday's attack on Riyadh's airport, which killed 12 people and wounded over 300, according to aviation authorities.