The UN children's agency warns that 69 million youngsters under the age of five will die from preventable causes between now and 2030 if countries don't accelerate action to improve health and education for the most disadvantaged.
Based on recent trends and projected population growth, 167 million children will also live in extreme poverty, 60 million won't be attending primary school, and 750 million women will have been married as children by 2030 unless inequality is tackled now, UNICEF said in its latest annual report issued on Tuesday.
UNICEF's deputy executive director Justin Forsyth said at the report's launch that the agency is "broadcasting our message into a world that is more hostile", especially to migrants and refugees, including millions of children.
Many are fleeing because of poverty and inequality, he says, and these root causes must be addressed "if you're going to stop some of these forces overwhelming particular countries and polarising the political debate".
"Our job in UNICEF is to be there on the ground and helping children survive," Forsyth said, but the agency also needs to ensure that there is "a factually fuelled debate about these tough issues of our times", and the message gets out that focusing on the most disadvantaged is crucial.
UNICEF program director Ted Chaiban says in addition to youngsters fleeing poverty and inequality, there are also more children living in conflict areas - 250 million, and 30 million are displaced.
Inequality exists in every country, he says, and globally children in the poorest 20 per cent of the population are twice as likely to die before age five than children in the richest 20 per cent.
