Central African Republic's interim President Michel Djotodia sits during a conference in Bangui in this Dec. 8 file photo. Djotodia resigned Friday after a two-day summit in neighboring Chad. Herve Serefio/Reuters/Landov hide caption

itoggle caption Herve Serefio/Reuters/Landov

French troops patrolled the Central African Republic's tense capital on Saturday, as reinforcements crossed into the country as part of a UN-mandated effort to quell a wave of deadly sectarian violence. Sia Kambou /AFP/Getty Images hide caption

itoggle caption Sia Kambou /AFP/Getty Images