Why is the US bombing Yemen in the first place? / Iran's Khamenei says US strikes on Yemen crime that must be stopped / Yemeni rebels warn 'fingers are on the trigger' and they're war-ready / Israel hits targets in Yemen in retaliation to Houthi attacks -- IDF / WHO chief 'escaped death narrowly' in Yemen airport attack / Houthi video shows the Yemeni rebels planted bombs on tanker now threatening Red Sea oil spill / Al Qaeda kills nine Yemeni pro-government fighters: officials / Qaeda kills nine Yemeni pro-government fighters: officials / Attacks on Houthis in Yemen only strengthened their authority in region -- Russian diplomat / A Yemen Houthi attack targets vessel in waters farther away than many previous assaults