The number of people affected by acute hunger has been rising globally in recent years. Extreme climate events, displacement as a result of conflict, disease and other calamities have left around nine percent of the world's population hungry. Across East Africa, for example, locust swarms are right now decimating crops, leaving millions of people without food. Humanitarian agencies warn that famines may be inevitable in a host of crisis-hit nations if current trends continue — and the pandemic has only deepened the problem. Consider that in Nigeria, the number of people who don't have enough to eat is expected to jump 41 percent this year from 2020 levels. Here's a look at the top 10 countries that will likely have the most people going hungry in 2021, and the main causes for their food insecurity.