A drought in the Horn of Africa, triggered by the same La Niña episode that caused massive flooding in Australia last year, is plunging millions of pastoralists closer to food insecurity.(..)The U.N. WFP estimates that 8.4 million people are in need of food aid in the region, according to spokesman David Orr.(..)"It is too early to say yet, although the general view is [the rains] look like being quite poor in certain parts of Somalia and Ethiopia," said Orr.