Lowcock

The U.N.'s humanitarian affairs chief called on Feb. 17 for an immediate ceasefire to be implemented in northwest Syria to prevent "the biggest humanitarian horror story of the 21st Century."

The United Nations said Monday it was seeking $5 billion to provide humanitarian aid to some 20 million Yemenis next year -- or about 70 percent of the war-stricken country's population.

Each year, the world body needs an additional billion dollars, UN Under Secretary General and Emergency Relief Coordinator Mark Lowcock said.