A graffiti riddled with bullets from fighting between militants loyal to Yemen's exiled government and Houthi militiamen is seen in Yemen's central city of Taiz August 18, 2015. Rival factions battled further south overnight in Yemen's third city, Taiz, Arab television stations reported, as local militias opposed to the Houthis attempted to consolidate recent advances on it. (Photo by Reuters/Stringer)
