Rebel group vowed to keep fighting until ‘aggression’ by the US and Israel ends on all fronts On The Ground newsletter: Get a weekly dispatch from our international correspondents Get a weekly dispatch from our international correspondents Get a weekly international news dispatch Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice Yemeni rebel group, the Houthis , have launched missile attacks on Israel for the first time