It’s been almost a week since the terrorist attack on a satirical magazine in France that killed 12 people, and much of the world remains in mourning for those victims and five others killed in attacks believed to be related. Millions have marched in solidarity with the people of France, and the nation remains on highest alert. 

As much of the global attention is focused on France, parts of Nigeria are very much in crisis. More than 7,000 people have reportedly fled the country so far. 

Four days before the Paris terror attack, the Islamist militant group Boko Haram carried out a brutal assault in the northeast Nigerian town of Baga. The Nigerian military pegs the death toll at 150, but local reports suggest it could be 20 times that. 

Then, over the weekend, a young girl walked into a crowded marketplace in Nigeria with explosives strapped to her and killed at least 10 people. No one has claimed responsibility, but Boko Haram is the main suspect in the attack. 

Evan Perkoski, a research fellow at Harvard’s Kennedy School of Government and terrorism expert, explained how Boko Haram functions as a terrorist group and why there wasn't more attention paid to the latest attacks.