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More than 10 million people worldwide are officially considered "refugees"—men, women, and children who have fled across international borders to seek shelter from chaos. The United Nations has broad powers to protect them. But there are another 25 million "internally displaced people"—those who become trapped inside their own country while fleeing war, persecution, or natural disaster—who don't fall into that neat category. This story explores how people suffering in limbo present one of the most vexing problems facing international humanitarian workers.
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