TOPSHOT - Displaced Yemeni children from Hodeida play in a shelter at a make-shift camp in a village in the northern district of Abs in Hajjah province, on September 16, 2018. - The United Nations is working to open a humanitarian air bridge to take Yemeni cancer patients for treatment at qualified facilities, representative for Yemen Nevio Zagaria of the World Health Organization (WHO) said Yesterday. (Photo by ESSA AHMED / AFP)