Guterres on Friday called the refugee influx "the biggest exodus of refugees in Africa since the Rwanda genocide" of 1994. The U.N. chief also made a plea for protection of refugees around the world, saying some richer countries haven't been as tolerant as some in Africa. [...] Grandi, the refugee chief, said that "regrettably, the hospitality of host countries is not adequately matched by financial contributions" from the international community. The U.N.