The organization grapples with unprecedented crises and budget pressures UNITED NATIONS: The United Nations named British diplomat and academic Tom Fletcher as head of its humanitarian agency on Wednesday, as the organization grapples with unprecedented crises and budget pressures. “United Nations Secretary-General Antonio Guterres today announced the appointment of Tom Fletcher of the United Kingdom as Under-Secretary-General for Humanitarian Affairs and Emergency Relief Coordinator, Office for the Coordination of Humanitarian Affairs (OCHA),” the UN said in a statement.