In Nigeria, fighters with the Boko Haram movement launched an assault on the city of Maiduguri Thursday, sending thousands of residents fleeing in panic. One eyewitness said three children were struck by bullets during the failed assault. The raid came six months after Nigeria’s president claimed the militant group had been largely defeated. The continuing violence has hampered relief efforts in northeastern Nigeria, where the U.N. warns nearly 1.5 million people are on the brink of famine.