The United Nations has announced that a 72-hour ceasefire in Yemen will come into effect tonight. In a statement, the office of the UN's special envoy for Yemen confirmed getting assurances of commitment from all parties to the truce.<br/><br/> UN said, the ceasefire between warring factions in Yemen raises hopes to an end of a war in the Arab world's poorest country that has killed thousands of civilians and left people starving. During the ceasefire the aid agencies may try to reach families trapped in towns and villages that have been cut off or are hard to reach. <br/><br/>Meanwhile, Houthi militants have welcomed the ceasefire to allow humanitarian aid to the areas cut off by months of fighting. <br/><br/>Saudi Arabia and several Gulf Arab allies have carried out air strikes and deployed troops in Yemen.The are supporting the exiled Yemeni government which was toppled by the Iran-aligned Houthis in 2015.<br/><br/>The Houthis and their allies, forces loyal to former President Ali Abdullah Saleh, hold most of Yemen's northern half, while forces loyal to the Saudi-backed Yemeni government share control of the rest of the country with local tribes.