7. Congo
Orphan population: 4.2 million
In the country where armed conflict have taken more lives than Holocaust, children are the most vulnerable group. Congo is one of the poorest countries with life expectancy estimated at 48 years, where the majority of the population is severely undernourished without access to basic medical care. According to some sources around 11 percent of the total child population are orphaned due to war, poverty and disease. Besides facing great risk of poverty and exploitation, orphans in Congo often end up as child soldiers, forced to fight in the civil war.