PARIS, June 17, 2016 (Xinhua) -- French President Francois Hollande (C), Prime Minister Manuel Valls (R) and Interior Minister Bernard Cazeneuve attend the national homage ceremony in honor of the police officer and his partner stabbed to death by a man who claimed allegiance to the Islamic State (IS) group, at the Versailles, in Paris, France, June 17, 2016. (Xinhua/Theo Duval)
