In Yemen, fresh air strikes and clashes have killed at least 65 fighters as Saudi-backed pro-government forces push an offensive against Huthi rebels. <br/><br/>Security sources said in Aden on Monday that Saudi-led coalition air raids overnight killed at least 18 of the Iran-backed rebels in Hais, south of the key port of Hodeida, while bombardments from gunships left 35 others dead in nearby Tahita.<br/><br/>The latest fighting killed 12 government troops and wounded 19 more, military sources said.<br/><br/>A Saudi-led coalition has been waging an air campaign against Yemen's Huthi rebels since March 2015 in an attempt to shore up the internationally recognised government of President Abedrabbo Mansur Hadi.<br/>'