Chance To Stop Expanding Boko Haram Is Now - U.N. Official

West Africa's Boko Haram Islamist militant group is expanding and there is only a small window of opportunity to stop it, the top U.N. aid official in Cameroon said on Monday.

Najat Rochdi, U.N. Resident Coordinator in Cameroon, said the group's strategy was to demonstrate its power by almost daily suicide bombings, often by young girls, while trying to gain territory.