Displaced people are seen at a school in Hodeidah city, Yemen, on June 17, 2018. Amid a major military operation by the Saudi Arabian-led coalition and pro-government forces to recapture Hodeidah city from the Houthi group, international humanitarian agencies have warned that an assault on Hodeidah would be a major disaster to the densely populated port city and would block aid supplies to more than 20 million people. (Xinhua/Emad Aumaisy)