Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. UN Shines Spotlight on Sahel Suffering Margaret Besheer NEW YORK - The United Nations is warning that Africa's Sahel region is facing a confluence of factors that are pushing the region deeper into poverty, hunger and the hands of extremists. The U.N. says that if the international community does not invest attention and money to stop the problem now, the consequences could spread beyond the region in the coming years. "We may be approaching a tipping point beyond which it will be much, much, more difficult and expensive to change the trajectory," U.N. humanitarian chief Mark Lowcock told VOA. The broader Sahel -- including the central border region between Mali, Burkina Faso and Niger, as well as the Lake Chad Basin of northeastern Nigeria, Cameroon, and Chad-- has become one of the world's fastest-growing humanitarian crises. .