Yemeni workers unload medical aid boxes from a boat carrying 460 tonnes of Emirati relief aid that docked in the port of the city of Aden, on May 24, 2015. The shipment, including medical and food supplies, is the second from the United Arab Emirates, which delivered last week 1,200 tonnes of relief aid. AFP PHOTO / SALEH AL-OBEIDI        (Photo credit should read SALEH AL-OBEIDI/AFP/Getty Images)