Thousands of tonnes of aid meant for Yemen is stranded in Djibouti. Aid groups are working around the clock to send much-needed supplies to Yemen, frantically loading larger ships to try to tackle the shortages once Saudi Arabia comes through on its promise to reopen some of the country's ports and airports. Saudi placed the current blockade on Yemen a week ago, after Houthi rebels fired a missile at Riyadh. The severe shortages of food, medicines, and vital vaccines mean that Yemen is facing a large-scale humanitarian disaster in which the UN warns millions of people could die. The UN is calling for a complete lifting of the embargo measures in order to avert what they are warning will be the world's worst famine in decades.