Humanitarian aid is about to be driven over a cliff, warns Obama’s former head of foreign disaster response, with a resurgence in HIV and other diseases likely

US aid
Sudanese workers offload US aid destined for South Sudan from the World Food Programme. The US State Department laid out plans on May 23 to slash Washington’s budget for diplomacy and foreign aid by more than 30%. Photograph: Ashraf Shazly/AFP/Getty Images