TOPSHOT - An aid worker carries a sack of flour in the northern province of Hajjah on September 25, 2018, as Yemenis displaced from the port city of Hodeidah receive humanitarian aid donated by the World Food Programme (WFP). - The three-year conflict between Yemen's Saudi-backed government and Huthi rebels linked to Iran has pushed the already impoverished country to the brink of famine, leaving many unable to afford food and water. (Photo by ESSA AHMED / AFP)