Fierce battles between Shiite Houthi rebels and pro-Government forces in Yemen's Marib province and the city of Taiz on Friday killed 20 people, according to officials.Nine rebels and seven anti-Houthi tribesmen were killed in clashes in Marib, medical officials said. Houthi shelling killed four civilians in the city of Taiz, according to medical and security officials. All officials spoke on condition of anonymity because they were not authorised to talk to reporters.
