Yemen's Houthi rebels say they have launched their biggest-ever military operation against Saudi Arabia.
Eight drones and three ballistic missiles were fired towards Saudi Arabia since Monday, and the Houthis say they plan to launch more.
The Saudi-led coalition fighting the Houthis in Yemen says it has intercepted a ballistic missile headed towards Riyadh.
A coalition spokesman says the attack was launched from the Yemeni capital, Sanaa, towards civilian targets in the kingdom.

Mamoun Abu-Nowar is a Retired Jordanian Air Force General; he joins us from Amman to discuss the latest attack.

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