CARTHAGE, July 20, 2016 (Xinhua) -- American singer Jason Derulo sings a song at a concert during the International Festival of Carthage in Carthage, Tunisia, on July 20, 2016. (Xinhua/Adel Ezzine)
CARTHAGE, July 20, 2016 (Xinhua) -- American singer Jason Derulo sings a song at a concert during the International Festival of Carthage in Carthage, Tunisia, on July 20, 2016. (Xinhua/Adel Ezzine)