Nigeria

Falling oil prices have been good news for the U.S. But they're causing multiple problems for some exporters. Government budgets are strained. Economies are struggling. Currencies are crashing.

Many of the displaced ended up in camps in the city of Yola. Now they're racing further away as concerns grow that Yola also faces attack, and that the government isn't doing enough to stop it.

The Islamist extremists have seized a string of towns in the northeast, displacing hundreds of thousands and creating a humanitarian crisis. Monday's attack on a boys school killed up to 50 students.

As many as 48 students reportedly died in the attack came during a morning assembly Monday. It's being blamed on the insurgent group Boko Haram.