A car bomb blast has ripped through an area of Yemen’s capital Sanaa. Unconfirmed reports say at least 28 people have been killed.br br ISIL militants have claimed responsibility on their web site saying it was revenge for the Muslins against the Shia Houthi rebels.br br The explosion happened behind a military hospital – some of the injured were in a nearby building mourning the victims of a previous attack.br br A Saudi-led military alliance has been bombing Yemen’s dominant Houthi group to try and dislodge them from the capital and restore the exiled president.br br The political vacuum has allowed hardline Sunni militants including ISIL room to operate.br br In a significant ratcheting up of three months of war, Yemeni forces claim to have launched a SCUD missile at an army base in Saudi Arabia.