In Yemen, a 72-hour ceasefire is slated to take effect at midnight tonight local time. The ceasefire calls for the U.S.-backed, Saudi-led coalition to lift the blockade against rebel-held areas and put a halt to airstrikes. It also calls on the Houthi rebels to stop their attacks. The temporary ceasefire seeks to allow food and other humanitarian aid into besieged areas, some of which are on the brink of famine.