Protester chant slogans in downtown Cairo, Egypt, on Sunday to mark the fourth anniversary of of the 2011 uprising that toppled President Hosni Mubarak. Several people have been killed in clashes with security forces.
An official stands in front of relief materials at a camp for displaced people in Maiduguri in Borno State last week. The town, where many have gathered after fleeing Boko Haram attacks, is now said to be under assault from the Islamist extremist group.
Allison Begalman, a student at the University of Southern California, wears goggles and headphones to experience a virtual mortar strike on civilians in Aleppo, Syria.