Ukraine is facing a humanitarian situation "enormously worse" than in the past after the collapse of the dam. 700,000 people need clean water and flooding farmland in one of the world's most important 'granaries' will cause a "cascade of problems", says Martin Griffiths.
So far, together with Ukrainian NGOs, the United Nations has reached 30,000People in flooded areas under Ukrainian control. Griffiths said he met with Russia's ambassador to the U.N. to gain access to Russian-controlled areas to help those affected by the floods.