The 'huge problem' Saudi Arabia faces in its conflict with the Houthis

Key points

• Houthi rebels have launched deadly attacks on Saudi Arabian airports, including a strike on King Khalid International Airport in Riyadh that killed 13 people and injured more than 300. The Houthis have warned that worse attacks are to come.
• The Iranian-backed group has also announced a maritime blockade of Saudi Arabia in the Red Sea. Experts say the attacks have exposed gaps in Saudi air defences, with reports suggesting the country is running low on interceptor missiles.
• Analysts say any negotiated end to the conflict will be difficult, as the Houthis currently hold the upper hand.