The former head of UN Photo, John Isaac, who photographed the work of the United Nations during three tempestuous, but also hopeful, decades at the end of the 20th Century has died aged 80.
UN News looks back at the world he witnessed through his camera lens.
John Isaac photographed some of the most heartbreaking human tragedies including the famine in Ethiopia in 1984.
A decade later he travelled to Rwanda, chronicling the genocide that had taken place. The experience left him deeply traumatized.
“John was a witness to a troubled world, but he brought compassion, understanding and humour through his work,” said Mita Hosali a long-time colleague in the UN Department of Global Communications.